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Finding the Fourth Proportional to 3,154.65, 4,732.04 and 814.70

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Solution

The fourth proportional to 3,154.65, 4,732.04 and 814.70 is: 1,222.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.65 : 4,732.04 = 814.70 : x
  2. Step 2: Convert to fraction form
    3,154.65/4,732.04 = 814.70/x
  3. Step 3: Cross multiply
    3,154.65x = 4,732.04 × 814.70
  4. Step 4: Simplify right side
    3,154.65x = 3,855,177.08
  5. Step 5: Solve for x
    x = 3,855,177.08/3,154.65
  6. Step 6: Final answer
    x = 1,222.06

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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.