Home / 5,515.78-7,613.55-3,531.68

Finding the Fourth Proportional to 5,515.78, 7,613.55 and 3,531.68

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Solution

The fourth proportional to 5,515.78, 7,613.55 and 3,531.68 is: 4,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.78 : 7,613.55 = 3,531.68 : x
  2. Step 2: Convert to fraction form
    5,515.78/7,613.55 = 3,531.68/x
  3. Step 3: Cross multiply
    5,515.78x = 7,613.55 × 3,531.68
  4. Step 4: Simplify right side
    5,515.78x = 26,888,622.26
  5. Step 5: Solve for x
    x = 26,888,622.26/5,515.78
  6. Step 6: Final answer
    x = 4,874.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.