Home / 3,191.64-4,765.92-2,607.78

Finding the Fourth Proportional to 3,191.64, 4,765.92 and 2,607.78

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Solution

The fourth proportional to 3,191.64, 4,765.92 and 2,607.78 is: 3,894.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.64 : 4,765.92 = 2,607.78 : x
  2. Step 2: Convert to fraction form
    3,191.64/4,765.92 = 2,607.78/x
  3. Step 3: Cross multiply
    3,191.64x = 4,765.92 × 2,607.78
  4. Step 4: Simplify right side
    3,191.64x = 12,428,470.86
  5. Step 5: Solve for x
    x = 12,428,470.86/3,191.64
  6. Step 6: Final answer
    x = 3,894.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.