Home / 1,412.38-1,947.17-1,190.95

Finding the Fourth Proportional to 1,412.38, 1,947.17 and 1,190.95

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Solution

The fourth proportional to 1,412.38, 1,947.17 and 1,190.95 is: 1,641.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.38 : 1,947.17 = 1,190.95 : x
  2. Step 2: Convert to fraction form
    1,412.38/1,947.17 = 1,190.95/x
  3. Step 3: Cross multiply
    1,412.38x = 1,947.17 × 1,190.95
  4. Step 4: Simplify right side
    1,412.38x = 2,318,980.22
  5. Step 5: Solve for x
    x = 2,318,980.22/1,412.38
  6. Step 6: Final answer
    x = 1,641.89

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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.