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Finding the Fourth Proportional to 5,679.14, 7,835.39 and 3,440.30

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Solution

The fourth proportional to 5,679.14, 7,835.39 and 3,440.30 is: 4,746.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.14 : 7,835.39 = 3,440.30 : x
  2. Step 2: Convert to fraction form
    5,679.14/7,835.39 = 3,440.30/x
  3. Step 3: Cross multiply
    5,679.14x = 7,835.39 × 3,440.30
  4. Step 4: Simplify right side
    5,679.14x = 26,956,092.22
  5. Step 5: Solve for x
    x = 26,956,092.22/5,679.14
  6. Step 6: Final answer
    x = 4,746.51

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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.