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Finding the Fourth Proportional to 3,106.12, 4,658.66 and 884.72

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Solution

The fourth proportional to 3,106.12, 4,658.66 and 884.72 is: 1,326.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.12 : 4,658.66 = 884.72 : x
  2. Step 2: Convert to fraction form
    3,106.12/4,658.66 = 884.72/x
  3. Step 3: Cross multiply
    3,106.12x = 4,658.66 × 884.72
  4. Step 4: Simplify right side
    3,106.12x = 4,121,609.68
  5. Step 5: Solve for x
    x = 4,121,609.68/3,106.12
  6. Step 6: Final answer
    x = 1,326.93

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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.