Home / 8,642.20-12,963.36-3,707.68

Finding the Fourth Proportional to 8,642.20, 12,963.36 and 3,707.68

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Solution

The fourth proportional to 8,642.20, 12,963.36 and 3,707.68 is: 5,561.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.20 : 12,963.36 = 3,707.68 : x
  2. Step 2: Convert to fraction form
    8,642.20/12,963.36 = 3,707.68/x
  3. Step 3: Cross multiply
    8,642.20x = 12,963.36 × 3,707.68
  4. Step 4: Simplify right side
    8,642.20x = 48,063,990.60
  5. Step 5: Solve for x
    x = 48,063,990.60/8,642.20
  6. Step 6: Final answer
    x = 5,561.55

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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.