Home / 8,379.14-12,569.00-3,115.53

Finding the Fourth Proportional to 8,379.14, 12,569.00 and 3,115.53

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Solution

The fourth proportional to 8,379.14, 12,569.00 and 3,115.53 is: 4,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.14 : 12,569.00 = 3,115.53 : x
  2. Step 2: Convert to fraction form
    8,379.14/12,569.00 = 3,115.53/x
  3. Step 3: Cross multiply
    8,379.14x = 12,569.00 × 3,115.53
  4. Step 4: Simplify right side
    8,379.14x = 39,159,080.99
  5. Step 5: Solve for x
    x = 39,159,080.99/8,379.14
  6. Step 6: Final answer
    x = 4,673.40

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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.