Home / 8,315.28-12,473.09-3,118.32

Finding the Fourth Proportional to 8,315.28, 12,473.09 and 3,118.32

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Solution

The fourth proportional to 8,315.28, 12,473.09 and 3,118.32 is: 4,677.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.28 : 12,473.09 = 3,118.32 : x
  2. Step 2: Convert to fraction form
    8,315.28/12,473.09 = 3,118.32/x
  3. Step 3: Cross multiply
    8,315.28x = 12,473.09 × 3,118.32
  4. Step 4: Simplify right side
    8,315.28x = 38,895,086.01
  5. Step 5: Solve for x
    x = 38,895,086.01/8,315.28
  6. Step 6: Final answer
    x = 4,677.54

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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.