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Finding the Fourth Proportional to 6,862.55, 9,470.25 and 3,718.71

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Solution

The fourth proportional to 6,862.55, 9,470.25 and 3,718.71 is: 5,131.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.55 : 9,470.25 = 3,718.71 : x
  2. Step 2: Convert to fraction form
    6,862.55/9,470.25 = 3,718.71/x
  3. Step 3: Cross multiply
    6,862.55x = 9,470.25 × 3,718.71
  4. Step 4: Simplify right side
    6,862.55x = 35,217,113.38
  5. Step 5: Solve for x
    x = 35,217,113.38/6,862.55
  6. Step 6: Final answer
    x = 5,131.79

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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.