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Finding the Fourth Proportional to 8,618.00, 12,921.53 and 4,235.49

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Solution

The fourth proportional to 8,618.00, 12,921.53 and 4,235.49 is: 6,350.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.00 : 12,921.53 = 4,235.49 : x
  2. Step 2: Convert to fraction form
    8,618.00/12,921.53 = 4,235.49/x
  3. Step 3: Cross multiply
    8,618.00x = 12,921.53 × 4,235.49
  4. Step 4: Simplify right side
    8,618.00x = 54,728,989.92
  5. Step 5: Solve for x
    x = 54,728,989.92/8,618.00
  6. Step 6: Final answer
    x = 6,350.55

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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.