Home / 5,578.20-8,357.85-3,702.78

Finding the Fourth Proportional to 5,578.20, 8,357.85 and 3,702.78

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Solution

The fourth proportional to 5,578.20, 8,357.85 and 3,702.78 is: 5,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.20 : 8,357.85 = 3,702.78 : x
  2. Step 2: Convert to fraction form
    5,578.20/8,357.85 = 3,702.78/x
  3. Step 3: Cross multiply
    5,578.20x = 8,357.85 × 3,702.78
  4. Step 4: Simplify right side
    5,578.20x = 30,947,279.82
  5. Step 5: Solve for x
    x = 30,947,279.82/5,578.20
  6. Step 6: Final answer
    x = 5,547.90

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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.