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Finding the Fourth Proportional to 8,398.94, 11,590.25 and 4,621.75

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Solution

The fourth proportional to 8,398.94, 11,590.25 and 4,621.75 is: 6,377.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.94 : 11,590.25 = 4,621.75 : x
  2. Step 2: Convert to fraction form
    8,398.94/11,590.25 = 4,621.75/x
  3. Step 3: Cross multiply
    8,398.94x = 11,590.25 × 4,621.75
  4. Step 4: Simplify right side
    8,398.94x = 53,567,229.32
  5. Step 5: Solve for x
    x = 53,567,229.32/8,398.94
  6. Step 6: Final answer
    x = 6,377.85

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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.