Home / 1,311.15-1,966.44-1,159.29

Finding the Fourth Proportional to 1,311.15, 1,966.44 and 1,159.29

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Solution

The fourth proportional to 1,311.15, 1,966.44 and 1,159.29 is: 1,738.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.15 : 1,966.44 = 1,159.29 : x
  2. Step 2: Convert to fraction form
    1,311.15/1,966.44 = 1,159.29/x
  3. Step 3: Cross multiply
    1,311.15x = 1,966.44 × 1,159.29
  4. Step 4: Simplify right side
    1,311.15x = 2,279,674.23
  5. Step 5: Solve for x
    x = 2,279,674.23/1,311.15
  6. Step 6: Final answer
    x = 1,738.68

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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.