Home / 3,178.16-4,381.60-2,232.72

Finding the Fourth Proportional to 3,178.16, 4,381.60 and 2,232.72

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Solution

The fourth proportional to 3,178.16, 4,381.60 and 2,232.72 is: 3,078.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.16 : 4,381.60 = 2,232.72 : x
  2. Step 2: Convert to fraction form
    3,178.16/4,381.60 = 2,232.72/x
  3. Step 3: Cross multiply
    3,178.16x = 4,381.60 × 2,232.72
  4. Step 4: Simplify right side
    3,178.16x = 9,782,885.95
  5. Step 5: Solve for x
    x = 9,782,885.95/3,178.16
  6. Step 6: Final answer
    x = 3,078.16

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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.