Home / 2,516.78-3,775.16-1,129.35

Finding the Fourth Proportional to 2,516.78, 3,775.16 and 1,129.35

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Solution

The fourth proportional to 2,516.78, 3,775.16 and 1,129.35 is: 1,694.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.78 : 3,775.16 = 1,129.35 : x
  2. Step 2: Convert to fraction form
    2,516.78/3,775.16 = 1,129.35/x
  3. Step 3: Cross multiply
    2,516.78x = 3,775.16 × 1,129.35
  4. Step 4: Simplify right side
    2,516.78x = 4,263,471.30
  5. Step 5: Solve for x
    x = 4,263,471.30/2,516.78
  6. Step 6: Final answer
    x = 1,694.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.