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Finding the Fourth Proportional to 8,493.47, 12,744.79 and 4,990.32

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Solution

The fourth proportional to 8,493.47, 12,744.79 and 4,990.32 is: 7,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,493.47 : 12,744.79 = 4,990.32 : x
  2. Step 2: Convert to fraction form
    8,493.47/12,744.79 = 4,990.32/x
  3. Step 3: Cross multiply
    8,493.47x = 12,744.79 × 4,990.32
  4. Step 4: Simplify right side
    8,493.47x = 63,600,634.46
  5. Step 5: Solve for x
    x = 63,600,634.46/8,493.47
  6. Step 6: Final answer
    x = 7,488.18

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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.