Home / 2,110.05-2,911.95-1,225.80

Finding the Fourth Proportional to 2,110.05, 2,911.95 and 1,225.80

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Solution

The fourth proportional to 2,110.05, 2,911.95 and 1,225.80 is: 1,691.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.05 : 2,911.95 = 1,225.80 : x
  2. Step 2: Convert to fraction form
    2,110.05/2,911.95 = 1,225.80/x
  3. Step 3: Cross multiply
    2,110.05x = 2,911.95 × 1,225.80
  4. Step 4: Simplify right side
    2,110.05x = 3,569,468.31
  5. Step 5: Solve for x
    x = 3,569,468.31/2,110.05
  6. Step 6: Final answer
    x = 1,691.65

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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.