Home / 8,155.28-12,232.96-2,609.20

Finding the Fourth Proportional to 8,155.28, 12,232.96 and 2,609.20

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Solution

The fourth proportional to 8,155.28, 12,232.96 and 2,609.20 is: 3,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.28 : 12,232.96 = 2,609.20 : x
  2. Step 2: Convert to fraction form
    8,155.28/12,232.96 = 2,609.20/x
  3. Step 3: Cross multiply
    8,155.28x = 12,232.96 × 2,609.20
  4. Step 4: Simplify right side
    8,155.28x = 31,918,239.23
  5. Step 5: Solve for x
    x = 31,918,239.23/8,155.28
  6. Step 6: Final answer
    x = 3,913.81

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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.