Home / 8,109.68-11,196.12-5,320.04

Finding the Fourth Proportional to 8,109.68, 11,196.12 and 5,320.04

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Solution

The fourth proportional to 8,109.68, 11,196.12 and 5,320.04 is: 7,344.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.68 : 11,196.12 = 5,320.04 : x
  2. Step 2: Convert to fraction form
    8,109.68/11,196.12 = 5,320.04/x
  3. Step 3: Cross multiply
    8,109.68x = 11,196.12 × 5,320.04
  4. Step 4: Simplify right side
    8,109.68x = 59,563,806.24
  5. Step 5: Solve for x
    x = 59,563,806.24/8,109.68
  6. Step 6: Final answer
    x = 7,344.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.