Home / 5,569.20-7,680.96-3,998.16

Finding the Fourth Proportional to 5,569.20, 7,680.96 and 3,998.16

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Solution

The fourth proportional to 5,569.20, 7,680.96 and 3,998.16 is: 5,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,569.20 : 7,680.96 = 3,998.16 : x
  2. Step 2: Convert to fraction form
    5,569.20/7,680.96 = 3,998.16/x
  3. Step 3: Cross multiply
    5,569.20x = 7,680.96 × 3,998.16
  4. Step 4: Simplify right side
    5,569.20x = 30,709,707.03
  5. Step 5: Solve for x
    x = 30,709,707.03/5,569.20
  6. Step 6: Final answer
    x = 5,514.20

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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.