Home / 1,456.40-2,187.38-1,248.62

Finding the Fourth Proportional to 1,456.40, 2,187.38 and 1,248.62

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Solution

The fourth proportional to 1,456.40, 2,187.38 and 1,248.62 is: 1,875.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.40 : 2,187.38 = 1,248.62 : x
  2. Step 2: Convert to fraction form
    1,456.40/2,187.38 = 1,248.62/x
  3. Step 3: Cross multiply
    1,456.40x = 2,187.38 × 1,248.62
  4. Step 4: Simplify right side
    1,456.40x = 2,731,206.42
  5. Step 5: Solve for x
    x = 2,731,206.42/1,456.40
  6. Step 6: Final answer
    x = 1,875.31

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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.