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Finding the Fourth Proportional to 1,373.20, 1,895.10 and 814.00

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Solution

The fourth proportional to 1,373.20, 1,895.10 and 814.00 is: 1,123.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.20 : 1,895.10 = 814.00 : x
  2. Step 2: Convert to fraction form
    1,373.20/1,895.10 = 814.00/x
  3. Step 3: Cross multiply
    1,373.20x = 1,895.10 × 814.00
  4. Step 4: Simplify right side
    1,373.20x = 1,542,607.16
  5. Step 5: Solve for x
    x = 1,542,607.16/1,373.20
  6. Step 6: Final answer
    x = 1,123.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.