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Finding the Fourth Proportional to 2,399.36, 3,599.36 and 1,424.32

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Solution

The fourth proportional to 2,399.36, 3,599.36 and 1,424.32 is: 2,136.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.36 : 3,599.36 = 1,424.32 : x
  2. Step 2: Convert to fraction form
    2,399.36/3,599.36 = 1,424.32/x
  3. Step 3: Cross multiply
    2,399.36x = 3,599.36 × 1,424.32
  4. Step 4: Simplify right side
    2,399.36x = 5,126,640.44
  5. Step 5: Solve for x
    x = 5,126,640.44/2,399.36
  6. Step 6: Final answer
    x = 2,136.67

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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.