Home / 8,428.26-12,642.71-3,162.74

Finding the Fourth Proportional to 8,428.26, 12,642.71 and 3,162.74

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Solution

The fourth proportional to 8,428.26, 12,642.71 and 3,162.74 is: 4,744.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.26 : 12,642.71 = 3,162.74 : x
  2. Step 2: Convert to fraction form
    8,428.26/12,642.71 = 3,162.74/x
  3. Step 3: Cross multiply
    8,428.26x = 12,642.71 × 3,162.74
  4. Step 4: Simplify right side
    8,428.26x = 39,985,525.60
  5. Step 5: Solve for x
    x = 39,985,525.60/8,428.26
  6. Step 6: Final answer
    x = 4,744.22

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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.