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Finding the Fourth Proportional to 8,898.80, 13,349.40 and 3,057.20

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Solution

The fourth proportional to 8,898.80, 13,349.40 and 3,057.20 is: 4,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.80 : 13,349.40 = 3,057.20 : x
  2. Step 2: Convert to fraction form
    8,898.80/13,349.40 = 3,057.20/x
  3. Step 3: Cross multiply
    8,898.80x = 13,349.40 × 3,057.20
  4. Step 4: Simplify right side
    8,898.80x = 40,811,785.68
  5. Step 5: Solve for x
    x = 40,811,785.68/8,898.80
  6. Step 6: Final answer
    x = 4,586.21

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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.