Home / 9,142.77-12,617.62-5,163.95

Finding the Fourth Proportional to 9,142.77, 12,617.62 and 5,163.95

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Solution

The fourth proportional to 9,142.77, 12,617.62 and 5,163.95 is: 7,126.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.77 : 12,617.62 = 5,163.95 : x
  2. Step 2: Convert to fraction form
    9,142.77/12,617.62 = 5,163.95/x
  3. Step 3: Cross multiply
    9,142.77x = 12,617.62 × 5,163.95
  4. Step 4: Simplify right side
    9,142.77x = 65,156,806.48
  5. Step 5: Solve for x
    x = 65,156,806.48/9,142.77
  6. Step 6: Final answer
    x = 7,126.59

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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.