Home / 2,110.11-2,911.91-1,225.91

Finding the Fourth Proportional to 2,110.11, 2,911.91 and 1,225.91

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Solution

The fourth proportional to 2,110.11, 2,911.91 and 1,225.91 is: 1,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.11 : 2,911.91 = 1,225.91 : x
  2. Step 2: Convert to fraction form
    2,110.11/2,911.91 = 1,225.91/x
  3. Step 3: Cross multiply
    2,110.11x = 2,911.91 × 1,225.91
  4. Step 4: Simplify right side
    2,110.11x = 3,569,718.90
  5. Step 5: Solve for x
    x = 3,569,718.90/2,110.11
  6. Step 6: Final answer
    x = 1,691.72

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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.