Home / 8,313.56-12,470.87-3,380.51

Finding the Fourth Proportional to 8,313.56, 12,470.87 and 3,380.51

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Solution

The fourth proportional to 8,313.56, 12,470.87 and 3,380.51 is: 5,070.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.56 : 12,470.87 = 3,380.51 : x
  2. Step 2: Convert to fraction form
    8,313.56/12,470.87 = 3,380.51/x
  3. Step 3: Cross multiply
    8,313.56x = 12,470.87 × 3,380.51
  4. Step 4: Simplify right side
    8,313.56x = 42,157,846.84
  5. Step 5: Solve for x
    x = 42,157,846.84/8,313.56
  6. Step 6: Final answer
    x = 5,070.97

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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.