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Finding the Fourth Proportional to 7,169.76, 10,739.25 and 5,514.12

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Solution

The fourth proportional to 7,169.76, 10,739.25 and 5,514.12 is: 8,259.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169.76 : 10,739.25 = 5,514.12 : x
  2. Step 2: Convert to fraction form
    7,169.76/10,739.25 = 5,514.12/x
  3. Step 3: Cross multiply
    7,169.76x = 10,739.25 × 5,514.12
  4. Step 4: Simplify right side
    7,169.76x = 59,217,513.21
  5. Step 5: Solve for x
    x = 59,217,513.21/7,169.76
  6. Step 6: Final answer
    x = 8,259.34

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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.