Home / 5,230.19-7,216.25-3,105.78

Finding the Fourth Proportional to 5,230.19, 7,216.25 and 3,105.78

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Solution

The fourth proportional to 5,230.19, 7,216.25 and 3,105.78 is: 4,285.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.19 : 7,216.25 = 3,105.78 : x
  2. Step 2: Convert to fraction form
    5,230.19/7,216.25 = 3,105.78/x
  3. Step 3: Cross multiply
    5,230.19x = 7,216.25 × 3,105.78
  4. Step 4: Simplify right side
    5,230.19x = 22,412,069.40
  5. Step 5: Solve for x
    x = 22,412,069.40/5,230.19
  6. Step 6: Final answer
    x = 4,285.14

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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.