Home / 5,569.12-7,685.78-3,179.20

Finding the Fourth Proportional to 5,569.12, 7,685.78 and 3,179.20

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Solution

The fourth proportional to 5,569.12, 7,685.78 and 3,179.20 is: 4,387.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,569.12 : 7,685.78 = 3,179.20 : x
  2. Step 2: Convert to fraction form
    5,569.12/7,685.78 = 3,179.20/x
  3. Step 3: Cross multiply
    5,569.12x = 7,685.78 × 3,179.20
  4. Step 4: Simplify right side
    5,569.12x = 24,434,631.78
  5. Step 5: Solve for x
    x = 24,434,631.78/5,569.12
  6. Step 6: Final answer
    x = 4,387.52

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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.