Home / 8,109.12-11,187.68-4,572.38

Finding the Fourth Proportional to 8,109.12, 11,187.68 and 4,572.38

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Solution

The fourth proportional to 8,109.12, 11,187.68 and 4,572.38 is: 6,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.12 : 11,187.68 = 4,572.38 : x
  2. Step 2: Convert to fraction form
    8,109.12/11,187.68 = 4,572.38/x
  3. Step 3: Cross multiply
    8,109.12x = 11,187.68 × 4,572.38
  4. Step 4: Simplify right side
    8,109.12x = 51,154,324.28
  5. Step 5: Solve for x
    x = 51,154,324.28/8,109.12
  6. Step 6: Final answer
    x = 6,308.25

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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.