Home / 8,538.88-12,812.64-3,347.68

Finding the Fourth Proportional to 8,538.88, 12,812.64 and 3,347.68

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Solution

The fourth proportional to 8,538.88, 12,812.64 and 3,347.68 is: 5,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.88 : 12,812.64 = 3,347.68 : x
  2. Step 2: Convert to fraction form
    8,538.88/12,812.64 = 3,347.68/x
  3. Step 3: Cross multiply
    8,538.88x = 12,812.64 × 3,347.68
  4. Step 4: Simplify right side
    8,538.88x = 42,892,618.68
  5. Step 5: Solve for x
    x = 42,892,618.68/8,538.88
  6. Step 6: Final answer
    x = 5,023.21

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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.