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Finding the Fourth Proportional to 7,236.64, 9,986.76 and 4,092.76

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Solution

The fourth proportional to 7,236.64, 9,986.76 and 4,092.76 is: 5,648.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.64 : 9,986.76 = 4,092.76 : x
  2. Step 2: Convert to fraction form
    7,236.64/9,986.76 = 4,092.76/x
  3. Step 3: Cross multiply
    7,236.64x = 9,986.76 × 4,092.76
  4. Step 4: Simplify right side
    7,236.64x = 40,873,411.86
  5. Step 5: Solve for x
    x = 40,873,411.86/7,236.64
  6. Step 6: Final answer
    x = 5,648.12

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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.