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Finding the Fourth Proportional to 3,990.67, 5,984.62 and 1,526.19

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Solution

The fourth proportional to 3,990.67, 5,984.62 and 1,526.19 is: 2,288.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.67 : 5,984.62 = 1,526.19 : x
  2. Step 2: Convert to fraction form
    3,990.67/5,984.62 = 1,526.19/x
  3. Step 3: Cross multiply
    3,990.67x = 5,984.62 × 1,526.19
  4. Step 4: Simplify right side
    3,990.67x = 9,133,667.20
  5. Step 5: Solve for x
    x = 9,133,667.20/3,990.67
  6. Step 6: Final answer
    x = 2,288.76

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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.