Home / 3,141.72-4,717.14-1,911.53

Finding the Fourth Proportional to 3,141.72, 4,717.14 and 1,911.53

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Solution

The fourth proportional to 3,141.72, 4,717.14 and 1,911.53 is: 2,870.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.72 : 4,717.14 = 1,911.53 : x
  2. Step 2: Convert to fraction form
    3,141.72/4,717.14 = 1,911.53/x
  3. Step 3: Cross multiply
    3,141.72x = 4,717.14 × 1,911.53
  4. Step 4: Simplify right side
    3,141.72x = 9,016,959.25
  5. Step 5: Solve for x
    x = 9,016,959.25/3,141.72
  6. Step 6: Final answer
    x = 2,870.07

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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.