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Finding the Fourth Proportional to 8,699.79, 13,049.69 and 2,125.90

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Solution

The fourth proportional to 8,699.79, 13,049.69 and 2,125.90 is: 3,188.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.79 : 13,049.69 = 2,125.90 : x
  2. Step 2: Convert to fraction form
    8,699.79/13,049.69 = 2,125.90/x
  3. Step 3: Cross multiply
    8,699.79x = 13,049.69 × 2,125.90
  4. Step 4: Simplify right side
    8,699.79x = 27,742,335.97
  5. Step 5: Solve for x
    x = 27,742,335.97/8,699.79
  6. Step 6: Final answer
    x = 3,188.85

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1.5x scale

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.