Home / 1,371.79-2,058.90-1,097.20

Finding the Fourth Proportional to 1,371.79, 2,058.90 and 1,097.20

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Solution

The fourth proportional to 1,371.79, 2,058.90 and 1,097.20 is: 1,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.79 : 2,058.90 = 1,097.20 : x
  2. Step 2: Convert to fraction form
    1,371.79/2,058.90 = 1,097.20/x
  3. Step 3: Cross multiply
    1,371.79x = 2,058.90 × 1,097.20
  4. Step 4: Simplify right side
    1,371.79x = 2,259,025.08
  5. Step 5: Solve for x
    x = 2,259,025.08/1,371.79
  6. Step 6: Final answer
    x = 1,646.77

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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.