Home / 2,121.51-2,927.66-1,177.31

Finding the Fourth Proportional to 2,121.51, 2,927.66 and 1,177.31

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Solution

The fourth proportional to 2,121.51, 2,927.66 and 1,177.31 is: 1,624.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.51 : 2,927.66 = 1,177.31 : x
  2. Step 2: Convert to fraction form
    2,121.51/2,927.66 = 1,177.31/x
  3. Step 3: Cross multiply
    2,121.51x = 2,927.66 × 1,177.31
  4. Step 4: Simplify right side
    2,121.51x = 3,446,773.66
  5. Step 5: Solve for x
    x = 3,446,773.66/2,121.51
  6. Step 6: Final answer
    x = 1,624.68

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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.