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Finding the Fourth Proportional to 8,405.50, 11,600.31 and 4,680.22

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Solution

The fourth proportional to 8,405.50, 11,600.31 and 4,680.22 is: 6,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.50 : 11,600.31 = 4,680.22 : x
  2. Step 2: Convert to fraction form
    8,405.50/11,600.31 = 4,680.22/x
  3. Step 3: Cross multiply
    8,405.50x = 11,600.31 × 4,680.22
  4. Step 4: Simplify right side
    8,405.50x = 54,292,002.87
  5. Step 5: Solve for x
    x = 54,292,002.87/8,405.50
  6. Step 6: Final answer
    x = 6,459.10

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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.