Home / 8,631.65-12,948.08-2,788.71

Finding the Fourth Proportional to 8,631.65, 12,948.08 and 2,788.71

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Solution

The fourth proportional to 8,631.65, 12,948.08 and 2,788.71 is: 4,183.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.65 : 12,948.08 = 2,788.71 : x
  2. Step 2: Convert to fraction form
    8,631.65/12,948.08 = 2,788.71/x
  3. Step 3: Cross multiply
    8,631.65x = 12,948.08 × 2,788.71
  4. Step 4: Simplify right side
    8,631.65x = 36,108,426.23
  5. Step 5: Solve for x
    x = 36,108,426.23/8,631.65
  6. Step 6: Final answer
    x = 4,183.26

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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.