Home / 2,991.46-4,129.77-2,108.02

Finding the Fourth Proportional to 2,991.46, 4,129.77 and 2,108.02

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Solution

The fourth proportional to 2,991.46, 4,129.77 and 2,108.02 is: 2,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.46 : 4,129.77 = 2,108.02 : x
  2. Step 2: Convert to fraction form
    2,991.46/4,129.77 = 2,108.02/x
  3. Step 3: Cross multiply
    2,991.46x = 4,129.77 × 2,108.02
  4. Step 4: Simplify right side
    2,991.46x = 8,705,637.76
  5. Step 5: Solve for x
    x = 8,705,637.76/2,991.46
  6. Step 6: Final answer
    x = 2,910.16

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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.