Home / 8,679.07-13,019.11-2,439.57

Finding the Fourth Proportional to 8,679.07, 13,019.11 and 2,439.57

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Solution

The fourth proportional to 8,679.07, 13,019.11 and 2,439.57 is: 3,659.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.07 : 13,019.11 = 2,439.57 : x
  2. Step 2: Convert to fraction form
    8,679.07/13,019.11 = 2,439.57/x
  3. Step 3: Cross multiply
    8,679.07x = 13,019.11 × 2,439.57
  4. Step 4: Simplify right side
    8,679.07x = 31,761,013.40
  5. Step 5: Solve for x
    x = 31,761,013.40/8,679.07
  6. Step 6: Final answer
    x = 3,659.49

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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.