Home / 2,672.85-3,686.56-1,964.46

Finding the Fourth Proportional to 2,672.85, 3,686.56 and 1,964.46

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Solution

The fourth proportional to 2,672.85, 3,686.56 and 1,964.46 is: 2,709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.85 : 3,686.56 = 1,964.46 : x
  2. Step 2: Convert to fraction form
    2,672.85/3,686.56 = 1,964.46/x
  3. Step 3: Cross multiply
    2,672.85x = 3,686.56 × 1,964.46
  4. Step 4: Simplify right side
    2,672.85x = 7,242,099.66
  5. Step 5: Solve for x
    x = 7,242,099.66/2,672.85
  6. Step 6: Final answer
    x = 2,709.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.