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Finding the Fourth Proportional to 8,590.38, 12,883.41 and 3,393.42

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Solution

The fourth proportional to 8,590.38, 12,883.41 and 3,393.42 is: 5,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.38 : 12,883.41 = 3,393.42 : x
  2. Step 2: Convert to fraction form
    8,590.38/12,883.41 = 3,393.42/x
  3. Step 3: Cross multiply
    8,590.38x = 12,883.41 × 3,393.42
  4. Step 4: Simplify right side
    8,590.38x = 43,718,821.16
  5. Step 5: Solve for x
    x = 43,718,821.16/8,590.38
  6. Step 6: Final answer
    x = 5,089.28

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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.