Home / 6,613.92-9,126-3,962.40

Finding the Fourth Proportional to 6,613.92, 9,126 and 3,962.40

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Solution

The fourth proportional to 6,613.92, 9,126 and 3,962.40 is: 5,467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.92 : 9,126 = 3,962.40 : x
  2. Step 2: Convert to fraction form
    6,613.92/9,126 = 3,962.40/x
  3. Step 3: Cross multiply
    6,613.92x = 9,126 × 3,962.40
  4. Step 4: Simplify right side
    6,613.92x = 36,160,862.40
  5. Step 5: Solve for x
    x = 36,160,862.40/6,613.92
  6. Step 6: Final answer
    x = 5,467.39

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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.