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Finding the Fourth Proportional to 2,006.23, 3,009.80 and 707.71

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Solution

The fourth proportional to 2,006.23, 3,009.80 and 707.71 is: 1,061.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.23 : 3,009.80 = 707.71 : x
  2. Step 2: Convert to fraction form
    2,006.23/3,009.80 = 707.71/x
  3. Step 3: Cross multiply
    2,006.23x = 3,009.80 × 707.71
  4. Step 4: Simplify right side
    2,006.23x = 2,130,065.56
  5. Step 5: Solve for x
    x = 2,130,065.56/2,006.23
  6. Step 6: Final answer
    x = 1,061.73

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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.