Home / 2,170.18-3,254.31-999.90

Finding the Fourth Proportional to 2,170.18, 3,254.31 and 999.90

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Solution

The fourth proportional to 2,170.18, 3,254.31 and 999.90 is: 1,499.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.18 : 3,254.31 = 999.90 : x
  2. Step 2: Convert to fraction form
    2,170.18/3,254.31 = 999.90/x
  3. Step 3: Cross multiply
    2,170.18x = 3,254.31 × 999.90
  4. Step 4: Simplify right side
    2,170.18x = 3,253,984.57
  5. Step 5: Solve for x
    x = 3,253,984.57/2,170.18
  6. Step 6: Final answer
    x = 1,499.41

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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.