Home / 3,146.64-4,720.56-1,687.42

Finding the Fourth Proportional to 3,146.64, 4,720.56 and 1,687.42

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Solution

The fourth proportional to 3,146.64, 4,720.56 and 1,687.42 is: 2,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.64 : 4,720.56 = 1,687.42 : x
  2. Step 2: Convert to fraction form
    3,146.64/4,720.56 = 1,687.42/x
  3. Step 3: Cross multiply
    3,146.64x = 4,720.56 × 1,687.42
  4. Step 4: Simplify right side
    3,146.64x = 7,965,567.36
  5. Step 5: Solve for x
    x = 7,965,567.36/3,146.64
  6. Step 6: Final answer
    x = 2,531.45

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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.