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Finding the Fourth Proportional to 2,652.95, 3,979.94 and 804.23

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Solution

The fourth proportional to 2,652.95, 3,979.94 and 804.23 is: 1,206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.95 : 3,979.94 = 804.23 : x
  2. Step 2: Convert to fraction form
    2,652.95/3,979.94 = 804.23/x
  3. Step 3: Cross multiply
    2,652.95x = 3,979.94 × 804.23
  4. Step 4: Simplify right side
    2,652.95x = 3,200,778.15
  5. Step 5: Solve for x
    x = 3,200,778.15/2,652.95
  6. Step 6: Final answer
    x = 1,206.50

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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.