Home / 2,991.61-4,118.97-2,714.80

Finding the Fourth Proportional to 2,991.61, 4,118.97 and 2,714.80

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Solution

The fourth proportional to 2,991.61, 4,118.97 and 2,714.80 is: 3,737.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.61 : 4,118.97 = 2,714.80 : x
  2. Step 2: Convert to fraction form
    2,991.61/4,118.97 = 2,714.80/x
  3. Step 3: Cross multiply
    2,991.61x = 4,118.97 × 2,714.80
  4. Step 4: Simplify right side
    2,991.61x = 11,182,179.76
  5. Step 5: Solve for x
    x = 11,182,179.76/2,991.61
  6. Step 6: Final answer
    x = 3,737.85

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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.