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Finding the Fourth Proportional to 5,329.99, 7,994.99 and 1,999

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Solution

The fourth proportional to 5,329.99, 7,994.99 and 1,999 is: 2,998.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,329.99 : 7,994.99 = 1,999 : x
  2. Step 2: Convert to fraction form
    5,329.99/7,994.99 = 1,999/x
  3. Step 3: Cross multiply
    5,329.99x = 7,994.99 × 1,999
  4. Step 4: Simplify right side
    5,329.99x = 15,981,985.01
  5. Step 5: Solve for x
    x = 15,981,985.01/5,329.99
  6. Step 6: Final answer
    x = 2,998.50

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Double scale
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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.