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Finding the Fourth Proportional to 9,503.79, 13,042.85 and 8,749.28

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Solution

The fourth proportional to 9,503.79, 13,042.85 and 8,749.28 is: 12,007.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,503.79 : 13,042.85 = 8,749.28 : x
  2. Step 2: Convert to fraction form
    9,503.79/13,042.85 = 8,749.28/x
  3. Step 3: Cross multiply
    9,503.79x = 13,042.85 × 8,749.28
  4. Step 4: Simplify right side
    9,503.79x = 114,115,437.69
  5. Step 5: Solve for x
    x = 114,115,437.69/9,503.79
  6. Step 6: Final answer
    x = 12,007.36

Related Problems

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Half scale
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Double scale
Find fourth proportional to 9,504.79, 13,044.22 and 8,750.28
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.