Home / 1,338.04-2,007.41-557.78

Finding the Fourth Proportional to 1,338.04, 2,007.41 and 557.78

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Solution

The fourth proportional to 1,338.04, 2,007.41 and 557.78 is: 836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.04 : 2,007.41 = 557.78 : x
  2. Step 2: Convert to fraction form
    1,338.04/2,007.41 = 557.78/x
  3. Step 3: Cross multiply
    1,338.04x = 2,007.41 × 557.78
  4. Step 4: Simplify right side
    1,338.04x = 1,119,695.38
  5. Step 5: Solve for x
    x = 1,119,695.38/1,338.04
  6. Step 6: Final answer
    x = 836.82

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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.