Home / 3,989.86-5,502.33-2,732.74

Finding the Fourth Proportional to 3,989.86, 5,502.33 and 2,732.74

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Solution

The fourth proportional to 3,989.86, 5,502.33 and 2,732.74 is: 3,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.86 : 5,502.33 = 2,732.74 : x
  2. Step 2: Convert to fraction form
    3,989.86/5,502.33 = 2,732.74/x
  3. Step 3: Cross multiply
    3,989.86x = 5,502.33 × 2,732.74
  4. Step 4: Simplify right side
    3,989.86x = 15,036,423.53
  5. Step 5: Solve for x
    x = 15,036,423.53/3,989.86
  6. Step 6: Final answer
    x = 3,768.66

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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.