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Finding the Fourth Proportional to 2,873.61, 4,310.09 and 999.15

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Solution

The fourth proportional to 2,873.61, 4,310.09 and 999.15 is: 1,498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,873.61 : 4,310.09 = 999.15 : x
  2. Step 2: Convert to fraction form
    2,873.61/4,310.09 = 999.15/x
  3. Step 3: Cross multiply
    2,873.61x = 4,310.09 × 999.15
  4. Step 4: Simplify right side
    2,873.61x = 4,306,421.43
  5. Step 5: Solve for x
    x = 4,306,421.43/2,873.61
  6. Step 6: Final answer
    x = 1,498.61

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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.