Home / 2,767.78-3,819.51-1,508.80

Finding the Fourth Proportional to 2,767.78, 3,819.51 and 1,508.80

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Solution

The fourth proportional to 2,767.78, 3,819.51 and 1,508.80 is: 2,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.78 : 3,819.51 = 1,508.80 : x
  2. Step 2: Convert to fraction form
    2,767.78/3,819.51 = 1,508.80/x
  3. Step 3: Cross multiply
    2,767.78x = 3,819.51 × 1,508.80
  4. Step 4: Simplify right side
    2,767.78x = 5,762,876.69
  5. Step 5: Solve for x
    x = 5,762,876.69/2,767.78
  6. Step 6: Final answer
    x = 2,082.13

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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.