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Finding the Fourth Proportional to 2,723.22, 4,084.90 and 874.50

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Solution

The fourth proportional to 2,723.22, 4,084.90 and 874.50 is: 1,311.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,723.22 : 4,084.90 = 874.50 : x
  2. Step 2: Convert to fraction form
    2,723.22/4,084.90 = 874.50/x
  3. Step 3: Cross multiply
    2,723.22x = 4,084.90 × 874.50
  4. Step 4: Simplify right side
    2,723.22x = 3,572,227.55
  5. Step 5: Solve for x
    x = 3,572,227.55/2,723.22
  6. Step 6: Final answer
    x = 1,311.77

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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.