Home / 8,728.40-12,046.07-5,144.46

Finding the Fourth Proportional to 8,728.40, 12,046.07 and 5,144.46

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Solution

The fourth proportional to 8,728.40, 12,046.07 and 5,144.46 is: 7,099.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.40 : 12,046.07 = 5,144.46 : x
  2. Step 2: Convert to fraction form
    8,728.40/12,046.07 = 5,144.46/x
  3. Step 3: Cross multiply
    8,728.40x = 12,046.07 × 5,144.46
  4. Step 4: Simplify right side
    8,728.40x = 61,970,499.55
  5. Step 5: Solve for x
    x = 61,970,499.55/8,728.40
  6. Step 6: Final answer
    x = 7,099.87

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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.