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Finding the Fourth Proportional to 8,418.72, 11,633.28 and 8,014.08

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Solution

The fourth proportional to 8,418.72, 11,633.28 and 8,014.08 is: 11,074.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.72 : 11,633.28 = 8,014.08 : x
  2. Step 2: Convert to fraction form
    8,418.72/11,633.28 = 8,014.08/x
  3. Step 3: Cross multiply
    8,418.72x = 11,633.28 × 8,014.08
  4. Step 4: Simplify right side
    8,418.72x = 93,230,036.58
  5. Step 5: Solve for x
    x = 93,230,036.58/8,418.72
  6. Step 6: Final answer
    x = 11,074.13

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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.