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Finding the Fourth Proportional to 8,729.55, 13,094.08 and 2,806.20

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Solution

The fourth proportional to 8,729.55, 13,094.08 and 2,806.20 is: 4,209.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.55 : 13,094.08 = 2,806.20 : x
  2. Step 2: Convert to fraction form
    8,729.55/13,094.08 = 2,806.20/x
  3. Step 3: Cross multiply
    8,729.55x = 13,094.08 × 2,806.20
  4. Step 4: Simplify right side
    8,729.55x = 36,744,600.28
  5. Step 5: Solve for x
    x = 36,744,600.28/8,729.55
  6. Step 6: Final answer
    x = 4,209.22

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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.