Home / 1,277.91-1,913.22-1,175.85

Finding the Fourth Proportional to 1,277.91, 1,913.22 and 1,175.85

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Solution

The fourth proportional to 1,277.91, 1,913.22 and 1,175.85 is: 1,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.91 : 1,913.22 = 1,175.85 : x
  2. Step 2: Convert to fraction form
    1,277.91/1,913.22 = 1,175.85/x
  3. Step 3: Cross multiply
    1,277.91x = 1,913.22 × 1,175.85
  4. Step 4: Simplify right side
    1,277.91x = 2,249,659.74
  5. Step 5: Solve for x
    x = 2,249,659.74/1,277.91
  6. Step 6: Final answer
    x = 1,760.42

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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.