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Finding the Fourth Proportional to 7,253.76, 10,879.20 and 3,554.40

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Solution

The fourth proportional to 7,253.76, 10,879.20 and 3,554.40 is: 5,330.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,253.76 : 10,879.20 = 3,554.40 : x
  2. Step 2: Convert to fraction form
    7,253.76/10,879.20 = 3,554.40/x
  3. Step 3: Cross multiply
    7,253.76x = 10,879.20 × 3,554.40
  4. Step 4: Simplify right side
    7,253.76x = 38,669,028.48
  5. Step 5: Solve for x
    x = 38,669,028.48/7,253.76
  6. Step 6: Final answer
    x = 5,330.89

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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.