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Finding the Fourth Proportional to 5,329.35, 7,991.87 and 1,865.79

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Solution

The fourth proportional to 5,329.35, 7,991.87 and 1,865.79 is: 2,797.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,329.35 : 7,991.87 = 1,865.79 : x
  2. Step 2: Convert to fraction form
    5,329.35/7,991.87 = 1,865.79/x
  3. Step 3: Cross multiply
    5,329.35x = 7,991.87 × 1,865.79
  4. Step 4: Simplify right side
    5,329.35x = 14,911,141.80
  5. Step 5: Solve for x
    x = 14,911,141.80/5,329.35
  6. Step 6: Final answer
    x = 2,797.93

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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.