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Finding the Fourth Proportional to 1,374.14, 1,895.97 and 814.38

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Solution

The fourth proportional to 1,374.14, 1,895.97 and 814.38 is: 1,123.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374.14 : 1,895.97 = 814.38 : x
  2. Step 2: Convert to fraction form
    1,374.14/1,895.97 = 814.38/x
  3. Step 3: Cross multiply
    1,374.14x = 1,895.97 × 814.38
  4. Step 4: Simplify right side
    1,374.14x = 1,544,035.99
  5. Step 5: Solve for x
    x = 1,544,035.99/1,374.14
  6. Step 6: Final answer
    x = 1,123.64

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1.5x scale

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.