Home / 3,172.42-4,758.64-1,439.02

Finding the Fourth Proportional to 3,172.42, 4,758.64 and 1,439.02

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Solution

The fourth proportional to 3,172.42, 4,758.64 and 1,439.02 is: 2,158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.42 : 4,758.64 = 1,439.02 : x
  2. Step 2: Convert to fraction form
    3,172.42/4,758.64 = 1,439.02/x
  3. Step 3: Cross multiply
    3,172.42x = 4,758.64 × 1,439.02
  4. Step 4: Simplify right side
    3,172.42x = 6,847,778.13
  5. Step 5: Solve for x
    x = 6,847,778.13/3,172.42
  6. Step 6: Final answer
    x = 2,158.53

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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.