Home / 1,927.20-2,659.86-1,141.68

Finding the Fourth Proportional to 1,927.20, 2,659.86 and 1,141.68

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Solution

The fourth proportional to 1,927.20, 2,659.86 and 1,141.68 is: 1,575.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.20 : 2,659.86 = 1,141.68 : x
  2. Step 2: Convert to fraction form
    1,927.20/2,659.86 = 1,141.68/x
  3. Step 3: Cross multiply
    1,927.20x = 2,659.86 × 1,141.68
  4. Step 4: Simplify right side
    1,927.20x = 3,036,708.96
  5. Step 5: Solve for x
    x = 3,036,708.96/1,927.20
  6. Step 6: Final answer
    x = 1,575.71

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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.