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Finding the Fourth Proportional to 8,406.74, 11,600.78 and 4,629.18

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Solution

The fourth proportional to 8,406.74, 11,600.78 and 4,629.18 is: 6,387.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,406.74 : 11,600.78 = 4,629.18 : x
  2. Step 2: Convert to fraction form
    8,406.74/11,600.78 = 4,629.18/x
  3. Step 3: Cross multiply
    8,406.74x = 11,600.78 × 4,629.18
  4. Step 4: Simplify right side
    8,406.74x = 53,702,098.76
  5. Step 5: Solve for x
    x = 53,702,098.76/8,406.74
  6. Step 6: Final answer
    x = 6,387.98

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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.