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Finding the Fourth Proportional to 7,867.99, 11,801.98 and 5,395.31

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Solution

The fourth proportional to 7,867.99, 11,801.98 and 5,395.31 is: 8,092.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.99 : 11,801.98 = 5,395.31 : x
  2. Step 2: Convert to fraction form
    7,867.99/11,801.98 = 5,395.31/x
  3. Step 3: Cross multiply
    7,867.99x = 11,801.98 × 5,395.31
  4. Step 4: Simplify right side
    7,867.99x = 63,675,281.70
  5. Step 5: Solve for x
    x = 63,675,281.70/7,867.99
  6. Step 6: Final answer
    x = 8,092.96

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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.