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Finding the Fourth Proportional to 7,126, 9,833.88 and 3,982.19

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Solution

The fourth proportional to 7,126, 9,833.88 and 3,982.19 is: 5,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126 : 9,833.88 = 3,982.19 : x
  2. Step 2: Convert to fraction form
    7,126/9,833.88 = 3,982.19/x
  3. Step 3: Cross multiply
    7,126x = 9,833.88 × 3,982.19
  4. Step 4: Simplify right side
    7,126x = 39,160,378.60
  5. Step 5: Solve for x
    x = 39,160,378.60/7,126
  6. Step 6: Final answer
    x = 5,495.42

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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.