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Finding the Fourth Proportional to 1,349.73, 1,839.11 and 1,319.76

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Solution

The fourth proportional to 1,349.73, 1,839.11 and 1,319.76 is: 1,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.73 : 1,839.11 = 1,319.76 : x
  2. Step 2: Convert to fraction form
    1,349.73/1,839.11 = 1,319.76/x
  3. Step 3: Cross multiply
    1,349.73x = 1,839.11 × 1,319.76
  4. Step 4: Simplify right side
    1,349.73x = 2,427,177.21
  5. Step 5: Solve for x
    x = 2,427,177.21/1,349.73
  6. Step 6: Final answer
    x = 1,798.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.