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Finding the Fourth Proportional to 5,679.72, 7,833.42 and 3,439.26

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Solution

The fourth proportional to 5,679.72, 7,833.42 and 3,439.26 is: 4,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.72 : 7,833.42 = 3,439.26 : x
  2. Step 2: Convert to fraction form
    5,679.72/7,833.42 = 3,439.26/x
  3. Step 3: Cross multiply
    5,679.72x = 7,833.42 × 3,439.26
  4. Step 4: Simplify right side
    5,679.72x = 26,941,168.07
  5. Step 5: Solve for x
    x = 26,941,168.07/5,679.72
  6. Step 6: Final answer
    x = 4,743.40

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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.