Home / 1,675.91-2,311.61-1,011.92

Finding the Fourth Proportional to 1,675.91, 2,311.61 and 1,011.92

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Solution

The fourth proportional to 1,675.91, 2,311.61 and 1,011.92 is: 1,395.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.91 : 2,311.61 = 1,011.92 : x
  2. Step 2: Convert to fraction form
    1,675.91/2,311.61 = 1,011.92/x
  3. Step 3: Cross multiply
    1,675.91x = 2,311.61 × 1,011.92
  4. Step 4: Simplify right side
    1,675.91x = 2,339,147.77
  5. Step 5: Solve for x
    x = 2,339,147.77/1,675.91
  6. Step 6: Final answer
    x = 1,395.75

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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.