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Finding the Fourth Proportional to 2,869.72, 3,959.90 and 1,610.62

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Solution

The fourth proportional to 2,869.72, 3,959.90 and 1,610.62 is: 2,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.72 : 3,959.90 = 1,610.62 : x
  2. Step 2: Convert to fraction form
    2,869.72/3,959.90 = 1,610.62/x
  3. Step 3: Cross multiply
    2,869.72x = 3,959.90 × 1,610.62
  4. Step 4: Simplify right side
    2,869.72x = 6,377,894.14
  5. Step 5: Solve for x
    x = 6,377,894.14/2,869.72
  6. Step 6: Final answer
    x = 2,222.48

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1.5x scale

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.