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Finding the Fourth Proportional to 7,236.40, 10,877.80 and 6,722.80

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Solution

The fourth proportional to 7,236.40, 10,877.80 and 6,722.80 is: 10,105.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.40 : 10,877.80 = 6,722.80 : x
  2. Step 2: Convert to fraction form
    7,236.40/10,877.80 = 6,722.80/x
  3. Step 3: Cross multiply
    7,236.40x = 10,877.80 × 6,722.80
  4. Step 4: Simplify right side
    7,236.40x = 73,129,273.84
  5. Step 5: Solve for x
    x = 73,129,273.84/7,236.40
  6. Step 6: Final answer
    x = 10,105.75

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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.