Home / 3,186.90-4,782.21-1,337.88

Finding the Fourth Proportional to 3,186.90, 4,782.21 and 1,337.88

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Solution

The fourth proportional to 3,186.90, 4,782.21 and 1,337.88 is: 2,007.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.90 : 4,782.21 = 1,337.88 : x
  2. Step 2: Convert to fraction form
    3,186.90/4,782.21 = 1,337.88/x
  3. Step 3: Cross multiply
    3,186.90x = 4,782.21 × 1,337.88
  4. Step 4: Simplify right side
    3,186.90x = 6,398,023.11
  5. Step 5: Solve for x
    x = 6,398,023.11/3,186.90
  6. Step 6: Final answer
    x = 2,007.60

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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.