Home / 5,469.40-8,187.90-4,886.20

Finding the Fourth Proportional to 5,469.40, 8,187.90 and 4,886.20

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Solution

The fourth proportional to 5,469.40, 8,187.90 and 4,886.20 is: 7,314.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,469.40 : 8,187.90 = 4,886.20 : x
  2. Step 2: Convert to fraction form
    5,469.40/8,187.90 = 4,886.20/x
  3. Step 3: Cross multiply
    5,469.40x = 8,187.90 × 4,886.20
  4. Step 4: Simplify right side
    5,469.40x = 40,007,716.98
  5. Step 5: Solve for x
    x = 40,007,716.98/5,469.40
  6. Step 6: Final answer
    x = 7,314.83

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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.