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Finding the Fourth Proportional to 8,752.80, 13,123.80 and 5,053.20

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Solution

The fourth proportional to 8,752.80, 13,123.80 and 5,053.20 is: 7,576.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.80 : 13,123.80 = 5,053.20 : x
  2. Step 2: Convert to fraction form
    8,752.80/13,123.80 = 5,053.20/x
  3. Step 3: Cross multiply
    8,752.80x = 13,123.80 × 5,053.20
  4. Step 4: Simplify right side
    8,752.80x = 66,317,186.16
  5. Step 5: Solve for x
    x = 66,317,186.16/8,752.80
  6. Step 6: Final answer
    x = 7,576.68

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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.