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Finding the Fourth Proportional to 2,829.39, 4,243.47 and 881.13

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Solution

The fourth proportional to 2,829.39, 4,243.47 and 881.13 is: 1,321.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.39 : 4,243.47 = 881.13 : x
  2. Step 2: Convert to fraction form
    2,829.39/4,243.47 = 881.13/x
  3. Step 3: Cross multiply
    2,829.39x = 4,243.47 × 881.13
  4. Step 4: Simplify right side
    2,829.39x = 3,739,048.72
  5. Step 5: Solve for x
    x = 3,739,048.72/2,829.39
  6. Step 6: Final answer
    x = 1,321.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,830.39, 4,244.97 and 882.13
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.