Home / 5,405.32-8,109.20-4,427.25

Finding the Fourth Proportional to 5,405.32, 8,109.20 and 4,427.25

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Solution

The fourth proportional to 5,405.32, 8,109.20 and 4,427.25 is: 6,641.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.32 : 8,109.20 = 4,427.25 : x
  2. Step 2: Convert to fraction form
    5,405.32/8,109.20 = 4,427.25/x
  3. Step 3: Cross multiply
    5,405.32x = 8,109.20 × 4,427.25
  4. Step 4: Simplify right side
    5,405.32x = 35,901,455.70
  5. Step 5: Solve for x
    x = 35,901,455.70/5,405.32
  6. Step 6: Final answer
    x = 6,641.87

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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.