Home / 4,047.80-5,585.64-2,279.30

Finding the Fourth Proportional to 4,047.80, 5,585.64 and 2,279.30

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Solution

The fourth proportional to 4,047.80, 5,585.64 and 2,279.30 is: 3,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,047.80 : 5,585.64 = 2,279.30 : x
  2. Step 2: Convert to fraction form
    4,047.80/5,585.64 = 2,279.30/x
  3. Step 3: Cross multiply
    4,047.80x = 5,585.64 × 2,279.30
  4. Step 4: Simplify right side
    4,047.80x = 12,731,349.25
  5. Step 5: Solve for x
    x = 12,731,349.25/4,047.80
  6. Step 6: Final answer
    x = 3,145.25

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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.