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Finding the Fourth Proportional to 5,743.31, 8,612.91 and 1,994.12

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Solution

The fourth proportional to 5,743.31, 8,612.91 and 1,994.12 is: 2,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,743.31 : 8,612.91 = 1,994.12 : x
  2. Step 2: Convert to fraction form
    5,743.31/8,612.91 = 1,994.12/x
  3. Step 3: Cross multiply
    5,743.31x = 8,612.91 × 1,994.12
  4. Step 4: Simplify right side
    5,743.31x = 17,175,159.71
  5. Step 5: Solve for x
    x = 17,175,159.71/5,743.31
  6. Step 6: Final answer
    x = 2,990.47

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Double scale
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Similar ratio
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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.