Home / 9,121.77-12,587.95-5,144.17

Finding the Fourth Proportional to 9,121.77, 12,587.95 and 5,144.17

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Solution

The fourth proportional to 9,121.77, 12,587.95 and 5,144.17 is: 7,098.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.77 : 12,587.95 = 5,144.17 : x
  2. Step 2: Convert to fraction form
    9,121.77/12,587.95 = 5,144.17/x
  3. Step 3: Cross multiply
    9,121.77x = 12,587.95 × 5,144.17
  4. Step 4: Simplify right side
    9,121.77x = 64,754,510.42
  5. Step 5: Solve for x
    x = 64,754,510.42/9,121.77
  6. Step 6: Final answer
    x = 7,098.90

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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.