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Finding the Fourth Proportional to 3,994.90, 5,994.20 and 1,528.90

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Solution

The fourth proportional to 3,994.90, 5,994.20 and 1,528.90 is: 2,294.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.90 : 5,994.20 = 1,528.90 : x
  2. Step 2: Convert to fraction form
    3,994.90/5,994.20 = 1,528.90/x
  3. Step 3: Cross multiply
    3,994.90x = 5,994.20 × 1,528.90
  4. Step 4: Simplify right side
    3,994.90x = 9,164,532.38
  5. Step 5: Solve for x
    x = 9,164,532.38/3,994.90
  6. Step 6: Final answer
    x = 2,294.06

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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.