Home / 5,478.38-8,217.56-1,830.38

Finding the Fourth Proportional to 5,478.38, 8,217.56 and 1,830.38

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Solution

The fourth proportional to 5,478.38, 8,217.56 and 1,830.38 is: 2,745.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.38 : 8,217.56 = 1,830.38 : x
  2. Step 2: Convert to fraction form
    5,478.38/8,217.56 = 1,830.38/x
  3. Step 3: Cross multiply
    5,478.38x = 8,217.56 × 1,830.38
  4. Step 4: Simplify right side
    5,478.38x = 15,041,220.96
  5. Step 5: Solve for x
    x = 15,041,220.96/5,478.38
  6. Step 6: Final answer
    x = 2,745.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.