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Finding the Fourth Proportional to 8,535.92, 12,808.74 and 2,990.46

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Solution

The fourth proportional to 8,535.92, 12,808.74 and 2,990.46 is: 4,487.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,535.92 : 12,808.74 = 2,990.46 : x
  2. Step 2: Convert to fraction form
    8,535.92/12,808.74 = 2,990.46/x
  3. Step 3: Cross multiply
    8,535.92x = 12,808.74 × 2,990.46
  4. Step 4: Simplify right side
    8,535.92x = 38,304,024.62
  5. Step 5: Solve for x
    x = 38,304,024.62/8,535.92
  6. Step 6: Final answer
    x = 4,487.39

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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.