Home / 1,310.64-1,955.82-1,165.20

Finding the Fourth Proportional to 1,310.64, 1,955.82 and 1,165.20

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Solution

The fourth proportional to 1,310.64, 1,955.82 and 1,165.20 is: 1,738.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.64 : 1,955.82 = 1,165.20 : x
  2. Step 2: Convert to fraction form
    1,310.64/1,955.82 = 1,165.20/x
  3. Step 3: Cross multiply
    1,310.64x = 1,955.82 × 1,165.20
  4. Step 4: Simplify right side
    1,310.64x = 2,278,921.46
  5. Step 5: Solve for x
    x = 2,278,921.46/1,310.64
  6. Step 6: Final answer
    x = 1,738.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.