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Finding the Fourth Proportional to 9,240.80, 12,751.02 and 5,261.72

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Solution

The fourth proportional to 9,240.80, 12,751.02 and 5,261.72 is: 7,260.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,240.80 : 12,751.02 = 5,261.72 : x
  2. Step 2: Convert to fraction form
    9,240.80/12,751.02 = 5,261.72/x
  3. Step 3: Cross multiply
    9,240.80x = 12,751.02 × 5,261.72
  4. Step 4: Simplify right side
    9,240.80x = 67,092,296.95
  5. Step 5: Solve for x
    x = 67,092,296.95/9,240.80
  6. Step 6: Final answer
    x = 7,260.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.