Home / 4,071.76-5,618.88-2,279.32

Finding the Fourth Proportional to 4,071.76, 5,618.88 and 2,279.32

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Solution

The fourth proportional to 4,071.76, 5,618.88 and 2,279.32 is: 3,145.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,071.76 : 5,618.88 = 2,279.32 : x
  2. Step 2: Convert to fraction form
    4,071.76/5,618.88 = 2,279.32/x
  3. Step 3: Cross multiply
    4,071.76x = 5,618.88 × 2,279.32
  4. Step 4: Simplify right side
    4,071.76x = 12,807,225.56
  5. Step 5: Solve for x
    x = 12,807,225.56/4,071.76
  6. Step 6: Final answer
    x = 3,145.38

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Half scale
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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.