Home / 3,931.14-5,424.87-2,162.76

Finding the Fourth Proportional to 3,931.14, 5,424.87 and 2,162.76

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Solution

The fourth proportional to 3,931.14, 5,424.87 and 2,162.76 is: 2,984.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.14 : 5,424.87 = 2,162.76 : x
  2. Step 2: Convert to fraction form
    3,931.14/5,424.87 = 2,162.76/x
  3. Step 3: Cross multiply
    3,931.14x = 5,424.87 × 2,162.76
  4. Step 4: Simplify right side
    3,931.14x = 11,732,691.84
  5. Step 5: Solve for x
    x = 11,732,691.84/3,931.14
  6. Step 6: Final answer
    x = 2,984.55

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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.