Home / 8,122.60-12,187.68-4,420.43

Finding the Fourth Proportional to 8,122.60, 12,187.68 and 4,420.43

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Solution

The fourth proportional to 8,122.60, 12,187.68 and 4,420.43 is: 6,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.60 : 12,187.68 = 4,420.43 : x
  2. Step 2: Convert to fraction form
    8,122.60/12,187.68 = 4,420.43/x
  3. Step 3: Cross multiply
    8,122.60x = 12,187.68 × 4,420.43
  4. Step 4: Simplify right side
    8,122.60x = 53,874,703.26
  5. Step 5: Solve for x
    x = 53,874,703.26/8,122.60
  6. Step 6: Final answer
    x = 6,632.70

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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.