Home / 5,645.12-8,467.28-1,947.20

Finding the Fourth Proportional to 5,645.12, 8,467.28 and 1,947.20

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Solution

The fourth proportional to 5,645.12, 8,467.28 and 1,947.20 is: 2,920.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.12 : 8,467.28 = 1,947.20 : x
  2. Step 2: Convert to fraction form
    5,645.12/8,467.28 = 1,947.20/x
  3. Step 3: Cross multiply
    5,645.12x = 8,467.28 × 1,947.20
  4. Step 4: Simplify right side
    5,645.12x = 16,487,487.62
  5. Step 5: Solve for x
    x = 16,487,487.62/5,645.12
  6. Step 6: Final answer
    x = 2,920.66

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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.