Home / 2,782.11-4,173.15-702.28

Finding the Fourth Proportional to 2,782.11, 4,173.15 and 702.28

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Solution

The fourth proportional to 2,782.11, 4,173.15 and 702.28 is: 1,053.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.11 : 4,173.15 = 702.28 : x
  2. Step 2: Convert to fraction form
    2,782.11/4,173.15 = 702.28/x
  3. Step 3: Cross multiply
    2,782.11x = 4,173.15 × 702.28
  4. Step 4: Simplify right side
    2,782.11x = 2,930,715.89
  5. Step 5: Solve for x
    x = 2,930,715.89/2,782.11
  6. Step 6: Final answer
    x = 1,053.42

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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.