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Finding the Fourth Proportional to 6,601.61, 9,902.60 and 1,921.43

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Solution

The fourth proportional to 6,601.61, 9,902.60 and 1,921.43 is: 2,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,601.61 : 9,902.60 = 1,921.43 : x
  2. Step 2: Convert to fraction form
    6,601.61/9,902.60 = 1,921.43/x
  3. Step 3: Cross multiply
    6,601.61x = 9,902.60 × 1,921.43
  4. Step 4: Simplify right side
    6,601.61x = 19,027,152.72
  5. Step 5: Solve for x
    x = 19,027,152.72/6,601.61
  6. Step 6: Final answer
    x = 2,882.20

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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.