Home / 9,149.53-12,626.60-5,170.55

Finding the Fourth Proportional to 9,149.53, 12,626.60 and 5,170.55

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Solution

The fourth proportional to 9,149.53, 12,626.60 and 5,170.55 is: 7,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,149.53 : 12,626.60 = 5,170.55 : x
  2. Step 2: Convert to fraction form
    9,149.53/12,626.60 = 5,170.55/x
  3. Step 3: Cross multiply
    9,149.53x = 12,626.60 × 5,170.55
  4. Step 4: Simplify right side
    9,149.53x = 65,286,472.34
  5. Step 5: Solve for x
    x = 65,286,472.34/9,149.53
  6. Step 6: Final answer
    x = 7,135.50

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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.