Home / 5,438.12-8,155.56-1,974.56

Finding the Fourth Proportional to 5,438.12, 8,155.56 and 1,974.56

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Solution

The fourth proportional to 5,438.12, 8,155.56 and 1,974.56 is: 2,961.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.12 : 8,155.56 = 1,974.56 : x
  2. Step 2: Convert to fraction form
    5,438.12/8,155.56 = 1,974.56/x
  3. Step 3: Cross multiply
    5,438.12x = 8,155.56 × 1,974.56
  4. Step 4: Simplify right side
    5,438.12x = 16,103,642.55
  5. Step 5: Solve for x
    x = 16,103,642.55/5,438.12
  6. Step 6: Final answer
    x = 2,961.25

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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.