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Finding the Fourth Proportional to 7,854.99, 10,839.96 and 4,318.31

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Solution

The fourth proportional to 7,854.99, 10,839.96 and 4,318.31 is: 5,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.99 : 10,839.96 = 4,318.31 : x
  2. Step 2: Convert to fraction form
    7,854.99/10,839.96 = 4,318.31/x
  3. Step 3: Cross multiply
    7,854.99x = 10,839.96 × 4,318.31
  4. Step 4: Simplify right side
    7,854.99x = 46,810,253.47
  5. Step 5: Solve for x
    x = 46,810,253.47/7,854.99
  6. Step 6: Final answer
    x = 5,959.30

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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.