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Finding the Fourth Proportional to 7,260.78, 10,896.02 and 2,643.78

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Solution

The fourth proportional to 7,260.78, 10,896.02 and 2,643.78 is: 3,967.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,260.78 : 10,896.02 = 2,643.78 : x
  2. Step 2: Convert to fraction form
    7,260.78/10,896.02 = 2,643.78/x
  3. Step 3: Cross multiply
    7,260.78x = 10,896.02 × 2,643.78
  4. Step 4: Simplify right side
    7,260.78x = 28,806,679.76
  5. Step 5: Solve for x
    x = 28,806,679.76/7,260.78
  6. Step 6: Final answer
    x = 3,967.44

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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.