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Finding the Fourth Proportional to 6,855.29, 9,460.34 and 3,711.47

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Solution

The fourth proportional to 6,855.29, 9,460.34 and 3,711.47 is: 5,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.29 : 9,460.34 = 3,711.47 : x
  2. Step 2: Convert to fraction form
    6,855.29/9,460.34 = 3,711.47/x
  3. Step 3: Cross multiply
    6,855.29x = 9,460.34 × 3,711.47
  4. Step 4: Simplify right side
    6,855.29x = 35,111,787.11
  5. Step 5: Solve for x
    x = 35,111,787.11/6,855.29
  6. Step 6: Final answer
    x = 5,121.86

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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.