Home / 3,127.88-4,317.81-1,949.54

Finding the Fourth Proportional to 3,127.88, 4,317.81 and 1,949.54

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Solution

The fourth proportional to 3,127.88, 4,317.81 and 1,949.54 is: 2,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.88 : 4,317.81 = 1,949.54 : x
  2. Step 2: Convert to fraction form
    3,127.88/4,317.81 = 1,949.54/x
  3. Step 3: Cross multiply
    3,127.88x = 4,317.81 × 1,949.54
  4. Step 4: Simplify right side
    3,127.88x = 8,417,714.41
  5. Step 5: Solve for x
    x = 8,417,714.41/3,127.88
  6. Step 6: Final answer
    x = 2,691.19

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1.5x scale

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.