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Finding the Fourth Proportional to 2,878.65, 4,318.65 and 1,029.96

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Solution

The fourth proportional to 2,878.65, 4,318.65 and 1,029.96 is: 1,545.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.65 : 4,318.65 = 1,029.96 : x
  2. Step 2: Convert to fraction form
    2,878.65/4,318.65 = 1,029.96/x
  3. Step 3: Cross multiply
    2,878.65x = 4,318.65 × 1,029.96
  4. Step 4: Simplify right side
    2,878.65x = 4,448,036.75
  5. Step 5: Solve for x
    x = 4,448,036.75/2,878.65
  6. Step 6: Final answer
    x = 1,545.18

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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.