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Finding the Fourth Proportional to 7,710.88, 11,560.56 and 3,605.92

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Solution

The fourth proportional to 7,710.88, 11,560.56 and 3,605.92 is: 5,406.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,710.88 : 11,560.56 = 3,605.92 : x
  2. Step 2: Convert to fraction form
    7,710.88/11,560.56 = 3,605.92/x
  3. Step 3: Cross multiply
    7,710.88x = 11,560.56 × 3,605.92
  4. Step 4: Simplify right side
    7,710.88x = 41,686,454.52
  5. Step 5: Solve for x
    x = 41,686,454.52/7,710.88
  6. Step 6: Final answer
    x = 5,406.19

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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.