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Finding the Fourth Proportional to 8,642.62, 11,925.30 and 5,106.94

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Solution

The fourth proportional to 8,642.62, 11,925.30 and 5,106.94 is: 7,046.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.62 : 11,925.30 = 5,106.94 : x
  2. Step 2: Convert to fraction form
    8,642.62/11,925.30 = 5,106.94/x
  3. Step 3: Cross multiply
    8,642.62x = 11,925.30 × 5,106.94
  4. Step 4: Simplify right side
    8,642.62x = 60,901,791.58
  5. Step 5: Solve for x
    x = 60,901,791.58/8,642.62
  6. Step 6: Final answer
    x = 7,046.68

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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.