Home / 1,281.06-1,919.97-1,106.91

Finding the Fourth Proportional to 1,281.06, 1,919.97 and 1,106.91

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Solution

The fourth proportional to 1,281.06, 1,919.97 and 1,106.91 is: 1,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.06 : 1,919.97 = 1,106.91 : x
  2. Step 2: Convert to fraction form
    1,281.06/1,919.97 = 1,106.91/x
  3. Step 3: Cross multiply
    1,281.06x = 1,919.97 × 1,106.91
  4. Step 4: Simplify right side
    1,281.06x = 2,125,233.99
  5. Step 5: Solve for x
    x = 2,125,233.99/1,281.06
  6. Step 6: Final answer
    x = 1,658.97

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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.