Home / 1,946.74-2,687.01-1,247.74

Finding the Fourth Proportional to 1,946.74, 2,687.01 and 1,247.74

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Solution

The fourth proportional to 1,946.74, 2,687.01 and 1,247.74 is: 1,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.74 : 2,687.01 = 1,247.74 : x
  2. Step 2: Convert to fraction form
    1,946.74/2,687.01 = 1,247.74/x
  3. Step 3: Cross multiply
    1,946.74x = 2,687.01 × 1,247.74
  4. Step 4: Simplify right side
    1,946.74x = 3,352,689.86
  5. Step 5: Solve for x
    x = 3,352,689.86/1,946.74
  6. Step 6: Final answer
    x = 1,722.21

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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.