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Finding the Fourth Proportional to 5,805.80, 8,012.39 and 3,287.90

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Solution

The fourth proportional to 5,805.80, 8,012.39 and 3,287.90 is: 4,537.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,805.80 : 8,012.39 = 3,287.90 : x
  2. Step 2: Convert to fraction form
    5,805.80/8,012.39 = 3,287.90/x
  3. Step 3: Cross multiply
    5,805.80x = 8,012.39 × 3,287.90
  4. Step 4: Simplify right side
    5,805.80x = 26,343,880.58
  5. Step 5: Solve for x
    x = 26,343,880.58/5,805.80
  6. Step 6: Final answer
    x = 4,537.51

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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.