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Finding the Fourth Proportional to 8,806.50, 12,153.06 and 5,270.40

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Solution

The fourth proportional to 8,806.50, 12,153.06 and 5,270.40 is: 7,273.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.50 : 12,153.06 = 5,270.40 : x
  2. Step 2: Convert to fraction form
    8,806.50/12,153.06 = 5,270.40/x
  3. Step 3: Cross multiply
    8,806.50x = 12,153.06 × 5,270.40
  4. Step 4: Simplify right side
    8,806.50x = 64,051,487.42
  5. Step 5: Solve for x
    x = 64,051,487.42/8,806.50
  6. Step 6: Final answer
    x = 7,273.21

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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.