Home / 7,426.60-11,138.66-2,748.80

Finding the Fourth Proportional to 7,426.60, 11,138.66 and 2,748.80

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Solution

The fourth proportional to 7,426.60, 11,138.66 and 2,748.80 is: 4,122.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,426.60 : 11,138.66 = 2,748.80 : x
  2. Step 2: Convert to fraction form
    7,426.60/11,138.66 = 2,748.80/x
  3. Step 3: Cross multiply
    7,426.60x = 11,138.66 × 2,748.80
  4. Step 4: Simplify right side
    7,426.60x = 30,617,948.61
  5. Step 5: Solve for x
    x = 30,617,948.61/7,426.60
  6. Step 6: Final answer
    x = 4,122.74

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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.