Home / 1,458.40-2,187.92-677.83

Finding the Fourth Proportional to 1,458.40, 2,187.92 and 677.83

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Solution

The fourth proportional to 1,458.40, 2,187.92 and 677.83 is: 1,016.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.40 : 2,187.92 = 677.83 : x
  2. Step 2: Convert to fraction form
    1,458.40/2,187.92 = 677.83/x
  3. Step 3: Cross multiply
    1,458.40x = 2,187.92 × 677.83
  4. Step 4: Simplify right side
    1,458.40x = 1,483,037.81
  5. Step 5: Solve for x
    x = 1,483,037.81/1,458.40
  6. Step 6: Final answer
    x = 1,016.89

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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.