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Finding the Fourth Proportional to 6,602.61, 9,905.06 and 2,220.09

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Solution

The fourth proportional to 6,602.61, 9,905.06 and 2,220.09 is: 3,330.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,602.61 : 9,905.06 = 2,220.09 : x
  2. Step 2: Convert to fraction form
    6,602.61/9,905.06 = 2,220.09/x
  3. Step 3: Cross multiply
    6,602.61x = 9,905.06 × 2,220.09
  4. Step 4: Simplify right side
    6,602.61x = 21,990,113.55
  5. Step 5: Solve for x
    x = 21,990,113.55/6,602.61
  6. Step 6: Final answer
    x = 3,330.52

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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.