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Finding the Fourth Proportional to 2,767.78, 3,819.48 and 1,525.78

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Solution

The fourth proportional to 2,767.78, 3,819.48 and 1,525.78 is: 2,105.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.78 : 3,819.48 = 1,525.78 : x
  2. Step 2: Convert to fraction form
    2,767.78/3,819.48 = 1,525.78/x
  3. Step 3: Cross multiply
    2,767.78x = 3,819.48 × 1,525.78
  4. Step 4: Simplify right side
    2,767.78x = 5,827,686.19
  5. Step 5: Solve for x
    x = 5,827,686.19/2,767.78
  6. Step 6: Final answer
    x = 2,105.55

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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.