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Finding the Fourth Proportional to 1,993.68, 2,990.52 and 1,410.48

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Solution

The fourth proportional to 1,993.68, 2,990.52 and 1,410.48 is: 2,115.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.68 : 2,990.52 = 1,410.48 : x
  2. Step 2: Convert to fraction form
    1,993.68/2,990.52 = 1,410.48/x
  3. Step 3: Cross multiply
    1,993.68x = 2,990.52 × 1,410.48
  4. Step 4: Simplify right side
    1,993.68x = 4,218,068.65
  5. Step 5: Solve for x
    x = 4,218,068.65/1,993.68
  6. Step 6: Final answer
    x = 2,115.72

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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.