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Finding the Fourth Proportional to 2,058.22, 3,086.85 and 671.20

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Solution

The fourth proportional to 2,058.22, 3,086.85 and 671.20 is: 1,006.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,058.22 : 3,086.85 = 671.20 : x
  2. Step 2: Convert to fraction form
    2,058.22/3,086.85 = 671.20/x
  3. Step 3: Cross multiply
    2,058.22x = 3,086.85 × 671.20
  4. Step 4: Simplify right side
    2,058.22x = 2,071,893.72
  5. Step 5: Solve for x
    x = 2,071,893.72/2,058.22
  6. Step 6: Final answer
    x = 1,006.64

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1.5x scale

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.