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Finding the Fourth Proportional to 8,673.81, 13,011.33 and 3,479.69

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Solution

The fourth proportional to 8,673.81, 13,011.33 and 3,479.69 is: 5,219.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.81 : 13,011.33 = 3,479.69 : x
  2. Step 2: Convert to fraction form
    8,673.81/13,011.33 = 3,479.69/x
  3. Step 3: Cross multiply
    8,673.81x = 13,011.33 × 3,479.69
  4. Step 4: Simplify right side
    8,673.81x = 45,275,394.89
  5. Step 5: Solve for x
    x = 45,275,394.89/8,673.81
  6. Step 6: Final answer
    x = 5,219.78

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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.