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Finding the Fourth Proportional to 7,643.55, 11,463.21 and 2,712.54

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Solution

The fourth proportional to 7,643.55, 11,463.21 and 2,712.54 is: 4,068.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.55 : 11,463.21 = 2,712.54 : x
  2. Step 2: Convert to fraction form
    7,643.55/11,463.21 = 2,712.54/x
  3. Step 3: Cross multiply
    7,643.55x = 11,463.21 × 2,712.54
  4. Step 4: Simplify right side
    7,643.55x = 31,094,415.65
  5. Step 5: Solve for x
    x = 31,094,415.65/7,643.55
  6. Step 6: Final answer
    x = 4,068.06

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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.