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Finding the Fourth Proportional to 6,862.40, 9,470.11 and 3,718.59

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Solution

The fourth proportional to 6,862.40, 9,470.11 and 3,718.59 is: 5,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.40 : 9,470.11 = 3,718.59 : x
  2. Step 2: Convert to fraction form
    6,862.40/9,470.11 = 3,718.59/x
  3. Step 3: Cross multiply
    6,862.40x = 9,470.11 × 3,718.59
  4. Step 4: Simplify right side
    6,862.40x = 35,215,456.34
  5. Step 5: Solve for x
    x = 35,215,456.34/6,862.40
  6. Step 6: Final answer
    x = 5,131.65

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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.