Home / 3,177.50-4,381.83-2,279.72

Finding the Fourth Proportional to 3,177.50, 4,381.83 and 2,279.72

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Solution

The fourth proportional to 3,177.50, 4,381.83 and 2,279.72 is: 3,143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.50 : 4,381.83 = 2,279.72 : x
  2. Step 2: Convert to fraction form
    3,177.50/4,381.83 = 2,279.72/x
  3. Step 3: Cross multiply
    3,177.50x = 4,381.83 × 2,279.72
  4. Step 4: Simplify right side
    3,177.50x = 9,989,323.58
  5. Step 5: Solve for x
    x = 9,989,323.58/3,177.50
  6. Step 6: Final answer
    x = 3,143.77

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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.