Home / 5,535.38-7,638.82-3,178.28

Finding the Fourth Proportional to 5,535.38, 7,638.82 and 3,178.28

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Solution

The fourth proportional to 5,535.38, 7,638.82 and 3,178.28 is: 4,386.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,535.38 : 7,638.82 = 3,178.28 : x
  2. Step 2: Convert to fraction form
    5,535.38/7,638.82 = 3,178.28/x
  3. Step 3: Cross multiply
    5,535.38x = 7,638.82 × 3,178.28
  4. Step 4: Simplify right side
    5,535.38x = 24,278,262.69
  5. Step 5: Solve for x
    x = 24,278,262.69/5,535.38
  6. Step 6: Final answer
    x = 4,386.02

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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.