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Finding the Fourth Proportional to 5,452.99, 8,177.87 and 1,990.51

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Solution

The fourth proportional to 5,452.99, 8,177.87 and 1,990.51 is: 2,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,452.99 : 8,177.87 = 1,990.51 : x
  2. Step 2: Convert to fraction form
    5,452.99/8,177.87 = 1,990.51/x
  3. Step 3: Cross multiply
    5,452.99x = 8,177.87 × 1,990.51
  4. Step 4: Simplify right side
    5,452.99x = 16,278,122.06
  5. Step 5: Solve for x
    x = 16,278,122.06/5,452.99
  6. Step 6: Final answer
    x = 2,985.17

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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.