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Finding the Fourth Proportional to 7,042.65, 10,564.27 and 2,660.45

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Solution

The fourth proportional to 7,042.65, 10,564.27 and 2,660.45 is: 3,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.65 : 10,564.27 = 2,660.45 : x
  2. Step 2: Convert to fraction form
    7,042.65/10,564.27 = 2,660.45/x
  3. Step 3: Cross multiply
    7,042.65x = 10,564.27 × 2,660.45
  4. Step 4: Simplify right side
    7,042.65x = 28,105,667.61
  5. Step 5: Solve for x
    x = 28,105,667.61/7,042.65
  6. Step 6: Final answer
    x = 3,990.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.