Home / 4,143.20-5,717.60-2,280.20

Finding the Fourth Proportional to 4,143.20, 5,717.60 and 2,280.20

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Solution

The fourth proportional to 4,143.20, 5,717.60 and 2,280.20 is: 3,146.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,143.20 : 5,717.60 = 2,280.20 : x
  2. Step 2: Convert to fraction form
    4,143.20/5,717.60 = 2,280.20/x
  3. Step 3: Cross multiply
    4,143.20x = 5,717.60 × 2,280.20
  4. Step 4: Simplify right side
    4,143.20x = 13,037,231.53
  5. Step 5: Solve for x
    x = 13,037,231.53/4,143.20
  6. Step 6: Final answer
    x = 3,146.66

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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.