Home / 9,109.72-13,666.14-4,179.78

Finding the Fourth Proportional to 9,109.72, 13,666.14 and 4,179.78

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Solution

The fourth proportional to 9,109.72, 13,666.14 and 4,179.78 is: 6,270.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109.72 : 13,666.14 = 4,179.78 : x
  2. Step 2: Convert to fraction form
    9,109.72/13,666.14 = 4,179.78/x
  3. Step 3: Cross multiply
    9,109.72x = 13,666.14 × 4,179.78
  4. Step 4: Simplify right side
    9,109.72x = 57,121,437.75
  5. Step 5: Solve for x
    x = 57,121,437.75/9,109.72
  6. Step 6: Final answer
    x = 6,270.38

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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.