Home / 3,931.11-5,424.90-2,162.68

Finding the Fourth Proportional to 3,931.11, 5,424.90 and 2,162.68

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Solution

The fourth proportional to 3,931.11, 5,424.90 and 2,162.68 is: 2,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.11 : 5,424.90 = 2,162.68 : x
  2. Step 2: Convert to fraction form
    3,931.11/5,424.90 = 2,162.68/x
  3. Step 3: Cross multiply
    3,931.11x = 5,424.90 × 2,162.68
  4. Step 4: Simplify right side
    3,931.11x = 11,732,322.73
  5. Step 5: Solve for x
    x = 11,732,322.73/3,931.11
  6. Step 6: Final answer
    x = 2,984.48

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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.