Home / 1,647.24-2,272.50-1,079.92

Finding the Fourth Proportional to 1,647.24, 2,272.50 and 1,079.92

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Solution

The fourth proportional to 1,647.24, 2,272.50 and 1,079.92 is: 1,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.24 : 2,272.50 = 1,079.92 : x
  2. Step 2: Convert to fraction form
    1,647.24/2,272.50 = 1,079.92/x
  3. Step 3: Cross multiply
    1,647.24x = 2,272.50 × 1,079.92
  4. Step 4: Simplify right side
    1,647.24x = 2,454,106.84
  5. Step 5: Solve for x
    x = 2,454,106.84/1,647.24
  6. Step 6: Final answer
    x = 1,489.83

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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.