Home / 5,218.90-7,202.54-2,861.50

Finding the Fourth Proportional to 5,218.90, 7,202.54 and 2,861.50

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Solution

The fourth proportional to 5,218.90, 7,202.54 and 2,861.50 is: 3,949.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.90 : 7,202.54 = 2,861.50 : x
  2. Step 2: Convert to fraction form
    5,218.90/7,202.54 = 2,861.50/x
  3. Step 3: Cross multiply
    5,218.90x = 7,202.54 × 2,861.50
  4. Step 4: Simplify right side
    5,218.90x = 20,610,068.21
  5. Step 5: Solve for x
    x = 20,610,068.21/5,218.90
  6. Step 6: Final answer
    x = 3,949.12

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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.