Home / 8,317.12-12,477.68-3,123.04

Finding the Fourth Proportional to 8,317.12, 12,477.68 and 3,123.04

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Solution

The fourth proportional to 8,317.12, 12,477.68 and 3,123.04 is: 4,685.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.12 : 12,477.68 = 3,123.04 : x
  2. Step 2: Convert to fraction form
    8,317.12/12,477.68 = 3,123.04/x
  3. Step 3: Cross multiply
    8,317.12x = 12,477.68 × 3,123.04
  4. Step 4: Simplify right side
    8,317.12x = 38,968,293.75
  5. Step 5: Solve for x
    x = 38,968,293.75/8,317.12
  6. Step 6: Final answer
    x = 4,685.31

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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.