Home / 5,458.40-8,184.75-1,947.05

Finding the Fourth Proportional to 5,458.40, 8,184.75 and 1,947.05

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Solution

The fourth proportional to 5,458.40, 8,184.75 and 1,947.05 is: 2,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458.40 : 8,184.75 = 1,947.05 : x
  2. Step 2: Convert to fraction form
    5,458.40/8,184.75 = 1,947.05/x
  3. Step 3: Cross multiply
    5,458.40x = 8,184.75 × 1,947.05
  4. Step 4: Simplify right side
    5,458.40x = 15,936,076.56
  5. Step 5: Solve for x
    x = 15,936,076.56/5,458.40
  6. Step 6: Final answer
    x = 2,919.55

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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.