Home / 8,313.19-12,470.31-3,380.13

Finding the Fourth Proportional to 8,313.19, 12,470.31 and 3,380.13

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Solution

The fourth proportional to 8,313.19, 12,470.31 and 3,380.13 is: 5,070.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.19 : 12,470.31 = 3,380.13 : x
  2. Step 2: Convert to fraction form
    8,313.19/12,470.31 = 3,380.13/x
  3. Step 3: Cross multiply
    8,313.19x = 12,470.31 × 3,380.13
  4. Step 4: Simplify right side
    8,313.19x = 42,151,268.94
  5. Step 5: Solve for x
    x = 42,151,268.94/8,313.19
  6. Step 6: Final answer
    x = 5,070.41

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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.