Home / 5,219.31-7,202.65-2,861.47

Finding the Fourth Proportional to 5,219.31, 7,202.65 and 2,861.47

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Solution

The fourth proportional to 5,219.31, 7,202.65 and 2,861.47 is: 3,948.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.31 : 7,202.65 = 2,861.47 : x
  2. Step 2: Convert to fraction form
    5,219.31/7,202.65 = 2,861.47/x
  3. Step 3: Cross multiply
    5,219.31x = 7,202.65 × 2,861.47
  4. Step 4: Simplify right side
    5,219.31x = 20,610,174.05
  5. Step 5: Solve for x
    x = 20,610,174.05/5,219.31
  6. Step 6: Final answer
    x = 3,948.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.