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Finding the Fourth Proportional to 6,641.61, 9,162.36 and 3,984.39

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Solution

The fourth proportional to 6,641.61, 9,162.36 and 3,984.39 is: 5,496.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.61 : 9,162.36 = 3,984.39 : x
  2. Step 2: Convert to fraction form
    6,641.61/9,162.36 = 3,984.39/x
  3. Step 3: Cross multiply
    6,641.61x = 9,162.36 × 3,984.39
  4. Step 4: Simplify right side
    6,641.61x = 36,506,415.56
  5. Step 5: Solve for x
    x = 36,506,415.56/6,641.61
  6. Step 6: Final answer
    x = 5,496.62

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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.