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Finding the Fourth Proportional to 5,343.92, 7,374.74 and 2,986.21

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Solution

The fourth proportional to 5,343.92, 7,374.74 and 2,986.21 is: 4,121.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,343.92 : 7,374.74 = 2,986.21 : x
  2. Step 2: Convert to fraction form
    5,343.92/7,374.74 = 2,986.21/x
  3. Step 3: Cross multiply
    5,343.92x = 7,374.74 × 2,986.21
  4. Step 4: Simplify right side
    5,343.92x = 22,022,522.34
  5. Step 5: Solve for x
    x = 22,022,522.34/5,343.92
  6. Step 6: Final answer
    x = 4,121.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.