Home / 2,098.60-2,911.08-1,987.92

Finding the Fourth Proportional to 2,098.60, 2,911.08 and 1,987.92

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Solution

The fourth proportional to 2,098.60, 2,911.08 and 1,987.92 is: 2,757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.60 : 2,911.08 = 1,987.92 : x
  2. Step 2: Convert to fraction form
    2,098.60/2,911.08 = 1,987.92/x
  3. Step 3: Cross multiply
    2,098.60x = 2,911.08 × 1,987.92
  4. Step 4: Simplify right side
    2,098.60x = 5,786,994.15
  5. Step 5: Solve for x
    x = 5,786,994.15/2,098.60
  6. Step 6: Final answer
    x = 2,757.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.