Home / 5,219.20-7,202.69-2,861.34

Finding the Fourth Proportional to 5,219.20, 7,202.69 and 2,861.34

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Solution

The fourth proportional to 5,219.20, 7,202.69 and 2,861.34 is: 3,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.20 : 7,202.69 = 2,861.34 : x
  2. Step 2: Convert to fraction form
    5,219.20/7,202.69 = 2,861.34/x
  3. Step 3: Cross multiply
    5,219.20x = 7,202.69 × 2,861.34
  4. Step 4: Simplify right side
    5,219.20x = 20,609,345.00
  5. Step 5: Solve for x
    x = 20,609,345.00/5,219.20
  6. Step 6: Final answer
    x = 3,948.76

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Half scale
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Double scale
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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.