Home / 3,168.90-4,753.69-1,318.98

Finding the Fourth Proportional to 3,168.90, 4,753.69 and 1,318.98

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Solution

The fourth proportional to 3,168.90, 4,753.69 and 1,318.98 is: 1,978.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.90 : 4,753.69 = 1,318.98 : x
  2. Step 2: Convert to fraction form
    3,168.90/4,753.69 = 1,318.98/x
  3. Step 3: Cross multiply
    3,168.90x = 4,753.69 × 1,318.98
  4. Step 4: Simplify right side
    3,168.90x = 6,270,036.57
  5. Step 5: Solve for x
    x = 6,270,036.57/3,168.90
  6. Step 6: Final answer
    x = 1,978.62

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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.