Home / 2,121.71-2,927.96-1,177.66

Finding the Fourth Proportional to 2,121.71, 2,927.96 and 1,177.66

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Solution

The fourth proportional to 2,121.71, 2,927.96 and 1,177.66 is: 1,625.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.71 : 2,927.96 = 1,177.66 : x
  2. Step 2: Convert to fraction form
    2,121.71/2,927.96 = 1,177.66/x
  3. Step 3: Cross multiply
    2,121.71x = 2,927.96 × 1,177.66
  4. Step 4: Simplify right side
    2,121.71x = 3,448,137.00
  5. Step 5: Solve for x
    x = 3,448,137.00/2,121.71
  6. Step 6: Final answer
    x = 1,625.17

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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.