Home / 1,292.46-1,780.83-1,133.88

Finding the Fourth Proportional to 1,292.46, 1,780.83 and 1,133.88

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Solution

The fourth proportional to 1,292.46, 1,780.83 and 1,133.88 is: 1,562.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.46 : 1,780.83 = 1,133.88 : x
  2. Step 2: Convert to fraction form
    1,292.46/1,780.83 = 1,133.88/x
  3. Step 3: Cross multiply
    1,292.46x = 1,780.83 × 1,133.88
  4. Step 4: Simplify right side
    1,292.46x = 2,019,247.52
  5. Step 5: Solve for x
    x = 2,019,247.52/1,292.46
  6. Step 6: Final answer
    x = 1,562.33

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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.