Home / 4,047.76-5,585.94-2,279.20

Finding the Fourth Proportional to 4,047.76, 5,585.94 and 2,279.20

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Solution

The fourth proportional to 4,047.76, 5,585.94 and 2,279.20 is: 3,145.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,047.76 : 5,585.94 = 2,279.20 : x
  2. Step 2: Convert to fraction form
    4,047.76/5,585.94 = 2,279.20/x
  3. Step 3: Cross multiply
    4,047.76x = 5,585.94 × 2,279.20
  4. Step 4: Simplify right side
    4,047.76x = 12,731,474.45
  5. Step 5: Solve for x
    x = 12,731,474.45/4,047.76
  6. Step 6: Final answer
    x = 3,145.31

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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.