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Finding the Fourth Proportional to 6,672.89, 9,207.87 and 3,688.58

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Solution

The fourth proportional to 6,672.89, 9,207.87 and 3,688.58 is: 5,089.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,672.89 : 9,207.87 = 3,688.58 : x
  2. Step 2: Convert to fraction form
    6,672.89/9,207.87 = 3,688.58/x
  3. Step 3: Cross multiply
    6,672.89x = 9,207.87 × 3,688.58
  4. Step 4: Simplify right side
    6,672.89x = 33,963,965.12
  5. Step 5: Solve for x
    x = 33,963,965.12/6,672.89
  6. Step 6: Final answer
    x = 5,089.84

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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.