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Finding the Fourth Proportional to 8,411.67, 12,619.16 and 2,488.65

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Solution

The fourth proportional to 8,411.67, 12,619.16 and 2,488.65 is: 3,733.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,411.67 : 12,619.16 = 2,488.65 : x
  2. Step 2: Convert to fraction form
    8,411.67/12,619.16 = 2,488.65/x
  3. Step 3: Cross multiply
    8,411.67x = 12,619.16 × 2,488.65
  4. Step 4: Simplify right side
    8,411.67x = 31,404,660.09
  5. Step 5: Solve for x
    x = 31,404,660.09/8,411.67
  6. Step 6: Final answer
    x = 3,733.46

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1.5x scale

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.