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Finding the Fourth Proportional to 2,104.94, 3,154.62 and 870.65

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Solution

The fourth proportional to 2,104.94, 3,154.62 and 870.65 is: 1,304.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.94 : 3,154.62 = 870.65 : x
  2. Step 2: Convert to fraction form
    2,104.94/3,154.62 = 870.65/x
  3. Step 3: Cross multiply
    2,104.94x = 3,154.62 × 870.65
  4. Step 4: Simplify right side
    2,104.94x = 2,746,554.13
  5. Step 5: Solve for x
    x = 2,746,554.13/2,104.94
  6. Step 6: Final answer
    x = 1,304.82

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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.