Home / 3,608.78-4,979.35-2,193.20

Finding the Fourth Proportional to 3,608.78, 4,979.35 and 2,193.20

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Solution

The fourth proportional to 3,608.78, 4,979.35 and 2,193.20 is: 3,026.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.78 : 4,979.35 = 2,193.20 : x
  2. Step 2: Convert to fraction form
    3,608.78/4,979.35 = 2,193.20/x
  3. Step 3: Cross multiply
    3,608.78x = 4,979.35 × 2,193.20
  4. Step 4: Simplify right side
    3,608.78x = 10,920,710.42
  5. Step 5: Solve for x
    x = 10,920,710.42/3,608.78
  6. Step 6: Final answer
    x = 3,026.15

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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.