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Finding the Fourth Proportional to 8,858.16, 12,218.49 and 6,339.47

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Solution

The fourth proportional to 8,858.16, 12,218.49 and 6,339.47 is: 8,744.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.16 : 12,218.49 = 6,339.47 : x
  2. Step 2: Convert to fraction form
    8,858.16/12,218.49 = 6,339.47/x
  3. Step 3: Cross multiply
    8,858.16x = 12,218.49 × 6,339.47
  4. Step 4: Simplify right side
    8,858.16x = 77,458,689.71
  5. Step 5: Solve for x
    x = 77,458,689.71/8,858.16
  6. Step 6: Final answer
    x = 8,744.33

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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.