Home / 8,122.96-12,155.28-6,820.48

Finding the Fourth Proportional to 8,122.96, 12,155.28 and 6,820.48

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Solution

The fourth proportional to 8,122.96, 12,155.28 and 6,820.48 is: 10,206.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.96 : 12,155.28 = 6,820.48 : x
  2. Step 2: Convert to fraction form
    8,122.96/12,155.28 = 6,820.48/x
  3. Step 3: Cross multiply
    8,122.96x = 12,155.28 × 6,820.48
  4. Step 4: Simplify right side
    8,122.96x = 82,904,844.13
  5. Step 5: Solve for x
    x = 82,904,844.13/8,122.96
  6. Step 6: Final answer
    x = 10,206.24

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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.