Home / 3,186.38-4,397.98-2,125.82

Finding the Fourth Proportional to 3,186.38, 4,397.98 and 2,125.82

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Solution

The fourth proportional to 3,186.38, 4,397.98 and 2,125.82 is: 2,934.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.38 : 4,397.98 = 2,125.82 : x
  2. Step 2: Convert to fraction form
    3,186.38/4,397.98 = 2,125.82/x
  3. Step 3: Cross multiply
    3,186.38x = 4,397.98 × 2,125.82
  4. Step 4: Simplify right side
    3,186.38x = 9,349,313.84
  5. Step 5: Solve for x
    x = 9,349,313.84/3,186.38
  6. Step 6: Final answer
    x = 2,934.15

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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.