Home / 2,092.50-3,139.26-631.67

Finding the Fourth Proportional to 2,092.50, 3,139.26 and 631.67

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Solution

The fourth proportional to 2,092.50, 3,139.26 and 631.67 is: 947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.50 : 3,139.26 = 631.67 : x
  2. Step 2: Convert to fraction form
    2,092.50/3,139.26 = 631.67/x
  3. Step 3: Cross multiply
    2,092.50x = 3,139.26 × 631.67
  4. Step 4: Simplify right side
    2,092.50x = 1,982,958.30
  5. Step 5: Solve for x
    x = 1,982,958.30/2,092.50
  6. Step 6: Final answer
    x = 947.65

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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.