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Finding the Fourth Proportional to 3,980.16, 5,971.08 and 1,169.22

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Solution

The fourth proportional to 3,980.16, 5,971.08 and 1,169.22 is: 1,754.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.16 : 5,971.08 = 1,169.22 : x
  2. Step 2: Convert to fraction form
    3,980.16/5,971.08 = 1,169.22/x
  3. Step 3: Cross multiply
    3,980.16x = 5,971.08 × 1,169.22
  4. Step 4: Simplify right side
    3,980.16x = 6,981,532.93
  5. Step 5: Solve for x
    x = 6,981,532.93/3,980.16
  6. Step 6: Final answer
    x = 1,754.08

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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.