Home / 8,728.10-12,044.16-5,190.66

Finding the Fourth Proportional to 8,728.10, 12,044.16 and 5,190.66

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Solution

The fourth proportional to 8,728.10, 12,044.16 and 5,190.66 is: 7,162.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.10 : 12,044.16 = 5,190.66 : x
  2. Step 2: Convert to fraction form
    8,728.10/12,044.16 = 5,190.66/x
  3. Step 3: Cross multiply
    8,728.10x = 12,044.16 × 5,190.66
  4. Step 4: Simplify right side
    8,728.10x = 62,517,139.55
  5. Step 5: Solve for x
    x = 62,517,139.55/8,728.10
  6. Step 6: Final answer
    x = 7,162.74

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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.