Home / 8,407.11-12,609.78-3,727.20

Finding the Fourth Proportional to 8,407.11, 12,609.78 and 3,727.20

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Solution

The fourth proportional to 8,407.11, 12,609.78 and 3,727.20 is: 5,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.11 : 12,609.78 = 3,727.20 : x
  2. Step 2: Convert to fraction form
    8,407.11/12,609.78 = 3,727.20/x
  3. Step 3: Cross multiply
    8,407.11x = 12,609.78 × 3,727.20
  4. Step 4: Simplify right side
    8,407.11x = 46,999,108.97
  5. Step 5: Solve for x
    x = 46,999,108.97/8,407.11
  6. Step 6: Final answer
    x = 5,590.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.