Home / 8,123.76-12,187.46-2,929.64

Finding the Fourth Proportional to 8,123.76, 12,187.46 and 2,929.64

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Solution

The fourth proportional to 8,123.76, 12,187.46 and 2,929.64 is: 4,395.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.76 : 12,187.46 = 2,929.64 : x
  2. Step 2: Convert to fraction form
    8,123.76/12,187.46 = 2,929.64/x
  3. Step 3: Cross multiply
    8,123.76x = 12,187.46 × 2,929.64
  4. Step 4: Simplify right side
    8,123.76x = 35,704,816.70
  5. Step 5: Solve for x
    x = 35,704,816.70/8,123.76
  6. Step 6: Final answer
    x = 4,395.11

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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.