Home / 8,655.60-12,976.56-3,108

Finding the Fourth Proportional to 8,655.60, 12,976.56 and 3,108

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Solution

The fourth proportional to 8,655.60, 12,976.56 and 3,108 is: 4,659.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.60 : 12,976.56 = 3,108 : x
  2. Step 2: Convert to fraction form
    8,655.60/12,976.56 = 3,108/x
  3. Step 3: Cross multiply
    8,655.60x = 12,976.56 × 3,108
  4. Step 4: Simplify right side
    8,655.60x = 40,331,148.48
  5. Step 5: Solve for x
    x = 40,331,148.48/8,655.60
  6. Step 6: Final answer
    x = 4,659.54

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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.