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Finding the Fourth Proportional to 3,993.99, 5,990.52 and 1,528.74

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Solution

The fourth proportional to 3,993.99, 5,990.52 and 1,528.74 is: 2,292.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.99 : 5,990.52 = 1,528.74 : x
  2. Step 2: Convert to fraction form
    3,993.99/5,990.52 = 1,528.74/x
  3. Step 3: Cross multiply
    3,993.99x = 5,990.52 × 1,528.74
  4. Step 4: Simplify right side
    3,993.99x = 9,157,947.54
  5. Step 5: Solve for x
    x = 9,157,947.54/3,993.99
  6. Step 6: Final answer
    x = 2,292.93

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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.