Home / 2,280.42-3,147.51-1,906.76

Finding the Fourth Proportional to 2,280.42, 3,147.51 and 1,906.76

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Solution

The fourth proportional to 2,280.42, 3,147.51 and 1,906.76 is: 2,631.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.42 : 3,147.51 = 1,906.76 : x
  2. Step 2: Convert to fraction form
    2,280.42/3,147.51 = 1,906.76/x
  3. Step 3: Cross multiply
    2,280.42x = 3,147.51 × 1,906.76
  4. Step 4: Simplify right side
    2,280.42x = 6,001,530.43
  5. Step 5: Solve for x
    x = 6,001,530.43/2,280.42
  6. Step 6: Final answer
    x = 2,631.77

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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.