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Finding the Fourth Proportional to 6,989.95, 10,471.15 and 3,694.87

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Solution

The fourth proportional to 6,989.95, 10,471.15 and 3,694.87 is: 5,535.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.95 : 10,471.15 = 3,694.87 : x
  2. Step 2: Convert to fraction form
    6,989.95/10,471.15 = 3,694.87/x
  3. Step 3: Cross multiply
    6,989.95x = 10,471.15 × 3,694.87
  4. Step 4: Simplify right side
    6,989.95x = 38,689,538.00
  5. Step 5: Solve for x
    x = 38,689,538.00/6,989.95
  6. Step 6: Final answer
    x = 5,535.02

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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.