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Finding the Fourth Proportional to 7,806.31, 11,709.48 and 1,962.92

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Solution

The fourth proportional to 7,806.31, 11,709.48 and 1,962.92 is: 2,944.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,806.31 : 11,709.48 = 1,962.92 : x
  2. Step 2: Convert to fraction form
    7,806.31/11,709.48 = 1,962.92/x
  3. Step 3: Cross multiply
    7,806.31x = 11,709.48 × 1,962.92
  4. Step 4: Simplify right side
    7,806.31x = 22,984,772.48
  5. Step 5: Solve for x
    x = 22,984,772.48/7,806.31
  6. Step 6: Final answer
    x = 2,944.38

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1.5x scale

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.