Home / 5,213.85-7,801.56-3,135.12

Finding the Fourth Proportional to 5,213.85, 7,801.56 and 3,135.12

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Solution

The fourth proportional to 5,213.85, 7,801.56 and 3,135.12 is: 4,691.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.85 : 7,801.56 = 3,135.12 : x
  2. Step 2: Convert to fraction form
    5,213.85/7,801.56 = 3,135.12/x
  3. Step 3: Cross multiply
    5,213.85x = 7,801.56 × 3,135.12
  4. Step 4: Simplify right side
    5,213.85x = 24,458,826.79
  5. Step 5: Solve for x
    x = 24,458,826.79/5,213.85
  6. Step 6: Final answer
    x = 4,691.13

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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.