Home / 2,528.90-3,489.98-2,108.54

Finding the Fourth Proportional to 2,528.90, 3,489.98 and 2,108.54

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Solution

The fourth proportional to 2,528.90, 3,489.98 and 2,108.54 is: 2,909.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528.90 : 3,489.98 = 2,108.54 : x
  2. Step 2: Convert to fraction form
    2,528.90/3,489.98 = 2,108.54/x
  3. Step 3: Cross multiply
    2,528.90x = 3,489.98 × 2,108.54
  4. Step 4: Simplify right side
    2,528.90x = 7,358,760.61
  5. Step 5: Solve for x
    x = 7,358,760.61/2,528.90
  6. Step 6: Final answer
    x = 2,909.87

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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.