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Finding the Fourth Proportional to 8,793.23, 12,140.31 and 7,847.40

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Solution

The fourth proportional to 8,793.23, 12,140.31 and 7,847.40 is: 10,834.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.23 : 12,140.31 = 7,847.40 : x
  2. Step 2: Convert to fraction form
    8,793.23/12,140.31 = 7,847.40/x
  3. Step 3: Cross multiply
    8,793.23x = 12,140.31 × 7,847.40
  4. Step 4: Simplify right side
    8,793.23x = 95,269,868.69
  5. Step 5: Solve for x
    x = 95,269,868.69/8,793.23
  6. Step 6: Final answer
    x = 10,834.46

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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.