Home / 3,060.32-4,220.76-1,879.28

Finding the Fourth Proportional to 3,060.32, 4,220.76 and 1,879.28

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Solution

The fourth proportional to 3,060.32, 4,220.76 and 1,879.28 is: 2,591.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,060.32 : 4,220.76 = 1,879.28 : x
  2. Step 2: Convert to fraction form
    3,060.32/4,220.76 = 1,879.28/x
  3. Step 3: Cross multiply
    3,060.32x = 4,220.76 × 1,879.28
  4. Step 4: Simplify right side
    3,060.32x = 7,931,989.85
  5. Step 5: Solve for x
    x = 7,931,989.85/3,060.32
  6. Step 6: Final answer
    x = 2,591.88

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Half scale
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Double 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.