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Finding the Fourth Proportional to 3,640.70, 5,452.95 and 2,992.70

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Solution

The fourth proportional to 3,640.70, 5,452.95 and 2,992.70 is: 4,482.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.70 : 5,452.95 = 2,992.70 : x
  2. Step 2: Convert to fraction form
    3,640.70/5,452.95 = 2,992.70/x
  3. Step 3: Cross multiply
    3,640.70x = 5,452.95 × 2,992.70
  4. Step 4: Simplify right side
    3,640.70x = 16,319,043.47
  5. Step 5: Solve for x
    x = 16,319,043.47/3,640.70
  6. Step 6: Final answer
    x = 4,482.39

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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.