Home / 6,417.28-8,854.90-3,898.08

Finding the Fourth Proportional to 6,417.28, 8,854.90 and 3,898.08

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Solution

The fourth proportional to 6,417.28, 8,854.90 and 3,898.08 is: 5,378.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,417.28 : 8,854.90 = 3,898.08 : x
  2. Step 2: Convert to fraction form
    6,417.28/8,854.90 = 3,898.08/x
  3. Step 3: Cross multiply
    6,417.28x = 8,854.90 × 3,898.08
  4. Step 4: Simplify right side
    6,417.28x = 34,517,108.59
  5. Step 5: Solve for x
    x = 34,517,108.59/6,417.28
  6. Step 6: Final answer
    x = 5,378.78

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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.