Home / 8,109.02-12,156.24-2,913.68

Finding the Fourth Proportional to 8,109.02, 12,156.24 and 2,913.68

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Solution

The fourth proportional to 8,109.02, 12,156.24 and 2,913.68 is: 4,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.02 : 12,156.24 = 2,913.68 : x
  2. Step 2: Convert to fraction form
    8,109.02/12,156.24 = 2,913.68/x
  3. Step 3: Cross multiply
    8,109.02x = 12,156.24 × 2,913.68
  4. Step 4: Simplify right side
    8,109.02x = 35,419,393.36
  5. Step 5: Solve for x
    x = 35,419,393.36/8,109.02
  6. Step 6: Final answer
    x = 4,367.90

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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.