Home / 2,170.28-3,254.34-708.68

Finding the Fourth Proportional to 2,170.28, 3,254.34 and 708.68

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Solution

The fourth proportional to 2,170.28, 3,254.34 and 708.68 is: 1,062.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.28 : 3,254.34 = 708.68 : x
  2. Step 2: Convert to fraction form
    2,170.28/3,254.34 = 708.68/x
  3. Step 3: Cross multiply
    2,170.28x = 3,254.34 × 708.68
  4. Step 4: Simplify right side
    2,170.28x = 2,306,285.67
  5. Step 5: Solve for x
    x = 2,306,285.67/2,170.28
  6. Step 6: Final answer
    x = 1,062.67

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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.