Home / 1,921.36-2,877.72-1,374.16

Finding the Fourth Proportional to 1,921.36, 2,877.72 and 1,374.16

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Solution

The fourth proportional to 1,921.36, 2,877.72 and 1,374.16 is: 2,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.36 : 2,877.72 = 1,374.16 : x
  2. Step 2: Convert to fraction form
    1,921.36/2,877.72 = 1,374.16/x
  3. Step 3: Cross multiply
    1,921.36x = 2,877.72 × 1,374.16
  4. Step 4: Simplify right side
    1,921.36x = 3,954,447.72
  5. Step 5: Solve for x
    x = 3,954,447.72/1,921.36
  6. Step 6: Final answer
    x = 2,058.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.