Home / 8,428.20-12,645.02-2,585.96

Finding the Fourth Proportional to 8,428.20, 12,645.02 and 2,585.96

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Solution

The fourth proportional to 8,428.20, 12,645.02 and 2,585.96 is: 3,879.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.20 : 12,645.02 = 2,585.96 : x
  2. Step 2: Convert to fraction form
    8,428.20/12,645.02 = 2,585.96/x
  3. Step 3: Cross multiply
    8,428.20x = 12,645.02 × 2,585.96
  4. Step 4: Simplify right side
    8,428.20x = 32,699,515.92
  5. Step 5: Solve for x
    x = 32,699,515.92/8,428.20
  6. Step 6: Final answer
    x = 3,879.77

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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.