Home / 3,135.20-4,702.88-1,747.76

Finding the Fourth Proportional to 3,135.20, 4,702.88 and 1,747.76

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Solution

The fourth proportional to 3,135.20, 4,702.88 and 1,747.76 is: 2,621.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.20 : 4,702.88 = 1,747.76 : x
  2. Step 2: Convert to fraction form
    3,135.20/4,702.88 = 1,747.76/x
  3. Step 3: Cross multiply
    3,135.20x = 4,702.88 × 1,747.76
  4. Step 4: Simplify right side
    3,135.20x = 8,219,505.55
  5. Step 5: Solve for x
    x = 8,219,505.55/3,135.20
  6. Step 6: Final answer
    x = 2,621.68

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1.5x scale

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.