Home / 5,122.40-7,667.40-3,664.40

Finding the Fourth Proportional to 5,122.40, 7,667.40 and 3,664.40

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Solution

The fourth proportional to 5,122.40, 7,667.40 and 3,664.40 is: 5,485.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.40 : 7,667.40 = 3,664.40 : x
  2. Step 2: Convert to fraction form
    5,122.40/7,667.40 = 3,664.40/x
  3. Step 3: Cross multiply
    5,122.40x = 7,667.40 × 3,664.40
  4. Step 4: Simplify right side
    5,122.40x = 28,096,420.56
  5. Step 5: Solve for x
    x = 28,096,420.56/5,122.40
  6. Step 6: Final answer
    x = 5,485.01

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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.