Home / 4,742.62-7,115.14-1,821.14

Finding the Fourth Proportional to 4,742.62, 7,115.14 and 1,821.14

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Solution

The fourth proportional to 4,742.62, 7,115.14 and 1,821.14 is: 2,732.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.62 : 7,115.14 = 1,821.14 : x
  2. Step 2: Convert to fraction form
    4,742.62/7,115.14 = 1,821.14/x
  3. Step 3: Cross multiply
    4,742.62x = 7,115.14 × 1,821.14
  4. Step 4: Simplify right side
    4,742.62x = 12,957,666.06
  5. Step 5: Solve for x
    x = 12,957,666.06/4,742.62
  6. Step 6: Final answer
    x = 2,732.17

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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.