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Finding the Fourth Proportional to 8,912.52, 13,366.82 and 2,990.24

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Solution

The fourth proportional to 8,912.52, 13,366.82 and 2,990.24 is: 4,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.52 : 13,366.82 = 2,990.24 : x
  2. Step 2: Convert to fraction form
    8,912.52/13,366.82 = 2,990.24/x
  3. Step 3: Cross multiply
    8,912.52x = 13,366.82 × 2,990.24
  4. Step 4: Simplify right side
    8,912.52x = 39,969,999.84
  5. Step 5: Solve for x
    x = 39,969,999.84/8,912.52
  6. Step 6: Final answer
    x = 4,484.70

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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.