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Finding the Fourth Proportional to 7,206.50, 9,944.98 and 3,894.50

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Solution

The fourth proportional to 7,206.50, 9,944.98 and 3,894.50 is: 5,374.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,206.50 : 9,944.98 = 3,894.50 : x
  2. Step 2: Convert to fraction form
    7,206.50/9,944.98 = 3,894.50/x
  3. Step 3: Cross multiply
    7,206.50x = 9,944.98 × 3,894.50
  4. Step 4: Simplify right side
    7,206.50x = 38,730,724.61
  5. Step 5: Solve for x
    x = 38,730,724.61/7,206.50
  6. Step 6: Final answer
    x = 5,374.42

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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.