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Finding the Fourth Proportional to 2,605.02, 3,909.15 and 1,066.02

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Solution

The fourth proportional to 2,605.02, 3,909.15 and 1,066.02 is: 1,599.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.02 : 3,909.15 = 1,066.02 : x
  2. Step 2: Convert to fraction form
    2,605.02/3,909.15 = 1,066.02/x
  3. Step 3: Cross multiply
    2,605.02x = 3,909.15 × 1,066.02
  4. Step 4: Simplify right side
    2,605.02x = 4,167,232.08
  5. Step 5: Solve for x
    x = 4,167,232.08/2,605.02
  6. Step 6: Final answer
    x = 1,599.69

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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.