Home / 2,657.13-3,990.15-1,999.01

Finding the Fourth Proportional to 2,657.13, 3,990.15 and 1,999.01

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Solution

The fourth proportional to 2,657.13, 3,990.15 and 1,999.01 is: 3,001.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.13 : 3,990.15 = 1,999.01 : x
  2. Step 2: Convert to fraction form
    2,657.13/3,990.15 = 1,999.01/x
  3. Step 3: Cross multiply
    2,657.13x = 3,990.15 × 1,999.01
  4. Step 4: Simplify right side
    2,657.13x = 7,976,329.80
  5. Step 5: Solve for x
    x = 7,976,329.80/2,657.13
  6. Step 6: Final answer
    x = 3,001.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.