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Finding the Fourth Proportional to 8,648.36, 12,987.22 and 5,651.36

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Solution

The fourth proportional to 8,648.36, 12,987.22 and 5,651.36 is: 8,486.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.36 : 12,987.22 = 5,651.36 : x
  2. Step 2: Convert to fraction form
    8,648.36/12,987.22 = 5,651.36/x
  3. Step 3: Cross multiply
    8,648.36x = 12,987.22 × 5,651.36
  4. Step 4: Simplify right side
    8,648.36x = 73,395,455.62
  5. Step 5: Solve for x
    x = 73,395,455.62/8,648.36
  6. Step 6: Final answer
    x = 8,486.63

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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.