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Finding the Fourth Proportional to 1,998.60, 2,992.52 and 1,303.55

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Solution

The fourth proportional to 1,998.60, 2,992.52 and 1,303.55 is: 1,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.60 : 2,992.52 = 1,303.55 : x
  2. Step 2: Convert to fraction form
    1,998.60/2,992.52 = 1,303.55/x
  3. Step 3: Cross multiply
    1,998.60x = 2,992.52 × 1,303.55
  4. Step 4: Simplify right side
    1,998.60x = 3,900,884.48
  5. Step 5: Solve for x
    x = 3,900,884.48/1,998.60
  6. Step 6: Final answer
    x = 1,951.81

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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.