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Finding the Fourth Proportional to 8,957.68, 13,440.20 and 4,739.84

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Solution

The fourth proportional to 8,957.68, 13,440.20 and 4,739.84 is: 7,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.68 : 13,440.20 = 4,739.84 : x
  2. Step 2: Convert to fraction form
    8,957.68/13,440.20 = 4,739.84/x
  3. Step 3: Cross multiply
    8,957.68x = 13,440.20 × 4,739.84
  4. Step 4: Simplify right side
    8,957.68x = 63,704,397.57
  5. Step 5: Solve for x
    x = 63,704,397.57/8,957.68
  6. Step 6: Final answer
    x = 7,111.71

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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.