Home / 2,689.23-4,031.40-1,995.06

Finding the Fourth Proportional to 2,689.23, 4,031.40 and 1,995.06

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Solution

The fourth proportional to 2,689.23, 4,031.40 and 1,995.06 is: 2,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.23 : 4,031.40 = 1,995.06 : x
  2. Step 2: Convert to fraction form
    2,689.23/4,031.40 = 1,995.06/x
  3. Step 3: Cross multiply
    2,689.23x = 4,031.40 × 1,995.06
  4. Step 4: Simplify right side
    2,689.23x = 8,042,884.88
  5. Step 5: Solve for x
    x = 8,042,884.88/2,689.23
  6. Step 6: Final answer
    x = 2,990.78

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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.