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Finding the Fourth Proportional to 5,281.13, 7,931.96 and 3,888.97

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Solution

The fourth proportional to 5,281.13, 7,931.96 and 3,888.97 is: 5,841.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.13 : 7,931.96 = 3,888.97 : x
  2. Step 2: Convert to fraction form
    5,281.13/7,931.96 = 3,888.97/x
  3. Step 3: Cross multiply
    5,281.13x = 7,931.96 × 3,888.97
  4. Step 4: Simplify right side
    5,281.13x = 30,847,135.04
  5. Step 5: Solve for x
    x = 30,847,135.04/5,281.13
  6. Step 6: Final answer
    x = 5,841.01

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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.