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Finding the Fourth Proportional to 2,089.12, 3,133.41 and 994.18

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Solution

The fourth proportional to 2,089.12, 3,133.41 and 994.18 is: 1,491.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.12 : 3,133.41 = 994.18 : x
  2. Step 2: Convert to fraction form
    2,089.12/3,133.41 = 994.18/x
  3. Step 3: Cross multiply
    2,089.12x = 3,133.41 × 994.18
  4. Step 4: Simplify right side
    2,089.12x = 3,115,152.92
  5. Step 5: Solve for x
    x = 3,115,152.92/2,089.12
  6. Step 6: Final answer
    x = 1,491.14

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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.