Home / 1,079.13-1,619.02-750.40

Finding the Fourth Proportional to 1,079.13, 1,619.02 and 750.40

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Solution

The fourth proportional to 1,079.13, 1,619.02 and 750.40 is: 1,125.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.13 : 1,619.02 = 750.40 : x
  2. Step 2: Convert to fraction form
    1,079.13/1,619.02 = 750.40/x
  3. Step 3: Cross multiply
    1,079.13x = 1,619.02 × 750.40
  4. Step 4: Simplify right side
    1,079.13x = 1,214,912.61
  5. Step 5: Solve for x
    x = 1,214,912.61/1,079.13
  6. Step 6: Final answer
    x = 1,125.83

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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.