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Finding the Fourth Proportional to 2,089.65, 3,134.04 and 628.95

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Solution

The fourth proportional to 2,089.65, 3,134.04 and 628.95 is: 943.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.65 : 3,134.04 = 628.95 : x
  2. Step 2: Convert to fraction form
    2,089.65/3,134.04 = 628.95/x
  3. Step 3: Cross multiply
    2,089.65x = 3,134.04 × 628.95
  4. Step 4: Simplify right side
    2,089.65x = 1,971,154.46
  5. Step 5: Solve for x
    x = 1,971,154.46/2,089.65
  6. Step 6: Final answer
    x = 943.29

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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.