Home / 1,977.90-2,726.51-1,419.54

Finding the Fourth Proportional to 1,977.90, 2,726.51 and 1,419.54

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Solution

The fourth proportional to 1,977.90, 2,726.51 and 1,419.54 is: 1,956.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.90 : 2,726.51 = 1,419.54 : x
  2. Step 2: Convert to fraction form
    1,977.90/2,726.51 = 1,419.54/x
  3. Step 3: Cross multiply
    1,977.90x = 2,726.51 × 1,419.54
  4. Step 4: Simplify right side
    1,977.90x = 3,870,382.91
  5. Step 5: Solve for x
    x = 3,870,382.91/1,977.90
  6. Step 6: Final answer
    x = 1,956.81

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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.