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Finding the Fourth Proportional to 2,399.40, 3,599.42 and 1,230.01

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Solution

The fourth proportional to 2,399.40, 3,599.42 and 1,230.01 is: 1,845.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.40 : 3,599.42 = 1,230.01 : x
  2. Step 2: Convert to fraction form
    2,399.40/3,599.42 = 1,230.01/x
  3. Step 3: Cross multiply
    2,399.40x = 3,599.42 × 1,230.01
  4. Step 4: Simplify right side
    2,399.40x = 4,427,329.68
  5. Step 5: Solve for x
    x = 4,427,329.68/2,399.40
  6. Step 6: Final answer
    x = 1,845.18

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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.