Home / 3,318.24-4,977.84-3,120.48

Finding the Fourth Proportional to 3,318.24, 4,977.84 and 3,120.48

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Solution

The fourth proportional to 3,318.24, 4,977.84 and 3,120.48 is: 4,681.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.24 : 4,977.84 = 3,120.48 : x
  2. Step 2: Convert to fraction form
    3,318.24/4,977.84 = 3,120.48/x
  3. Step 3: Cross multiply
    3,318.24x = 4,977.84 × 3,120.48
  4. Step 4: Simplify right side
    3,318.24x = 15,533,250.16
  5. Step 5: Solve for x
    x = 15,533,250.16/3,318.24
  6. Step 6: Final answer
    x = 4,681.17

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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.