Home / 11,278.42-16,913.90-3,882.72

Finding the Fourth Proportional to 11,278.42, 16,913.90 and 3,882.72

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Solution

The fourth proportional to 11,278.42, 16,913.90 and 3,882.72 is: 5,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.42 : 16,913.90 = 3,882.72 : x
  2. Step 2: Convert to fraction form
    11,278.42/16,913.90 = 3,882.72/x
  3. Step 3: Cross multiply
    11,278.42x = 16,913.90 × 3,882.72
  4. Step 4: Simplify right side
    11,278.42x = 65,671,937.81
  5. Step 5: Solve for x
    x = 65,671,937.81/11,278.42
  6. Step 6: Final answer
    x = 5,822.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.