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Finding the Fourth Proportional to 9,318.76, 13,973.82 and 5,424.28

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Solution

The fourth proportional to 9,318.76, 13,973.82 and 5,424.28 is: 8,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.76 : 13,973.82 = 5,424.28 : x
  2. Step 2: Convert to fraction form
    9,318.76/13,973.82 = 5,424.28/x
  3. Step 3: Cross multiply
    9,318.76x = 13,973.82 × 5,424.28
  4. Step 4: Simplify right side
    9,318.76x = 75,797,912.35
  5. Step 5: Solve for x
    x = 75,797,912.35/9,318.76
  6. Step 6: Final answer
    x = 8,133.91

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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.