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Finding the Fourth Proportional to 3,608.16, 4,979.92 and 3,017.76

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Solution

The fourth proportional to 3,608.16, 4,979.92 and 3,017.76 is: 4,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.16 : 4,979.92 = 3,017.76 : x
  2. Step 2: Convert to fraction form
    3,608.16/4,979.92 = 3,017.76/x
  3. Step 3: Cross multiply
    3,608.16x = 4,979.92 × 3,017.76
  4. Step 4: Simplify right side
    3,608.16x = 15,028,203.38
  5. Step 5: Solve for x
    x = 15,028,203.38/3,608.16
  6. Step 6: Final answer
    x = 4,165.06

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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.