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Finding the Fourth Proportional to 9,137.03, 12,609.15 and 4,945.28

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Solution

The fourth proportional to 9,137.03, 12,609.15 and 4,945.28 is: 6,824.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137.03 : 12,609.15 = 4,945.28 : x
  2. Step 2: Convert to fraction form
    9,137.03/12,609.15 = 4,945.28/x
  3. Step 3: Cross multiply
    9,137.03x = 12,609.15 × 4,945.28
  4. Step 4: Simplify right side
    9,137.03x = 62,355,777.31
  5. Step 5: Solve for x
    x = 62,355,777.31/9,137.03
  6. Step 6: Final answer
    x = 6,824.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.