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Finding the Fourth Proportional to 8,719.81, 12,033.41 and 5,182.33

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Solution

The fourth proportional to 8,719.81, 12,033.41 and 5,182.33 is: 7,151.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.81 : 12,033.41 = 5,182.33 : x
  2. Step 2: Convert to fraction form
    8,719.81/12,033.41 = 5,182.33/x
  3. Step 3: Cross multiply
    8,719.81x = 12,033.41 × 5,182.33
  4. Step 4: Simplify right side
    8,719.81x = 62,361,101.65
  5. Step 5: Solve for x
    x = 62,361,101.65/8,719.81
  6. Step 6: Final answer
    x = 7,151.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.