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Finding the Fourth Proportional to 2,058.90, 3,088.35 and 672.39

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Solution

The fourth proportional to 2,058.90, 3,088.35 and 672.39 is: 1,008.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,058.90 : 3,088.35 = 672.39 : x
  2. Step 2: Convert to fraction form
    2,058.90/3,088.35 = 672.39/x
  3. Step 3: Cross multiply
    2,058.90x = 3,088.35 × 672.39
  4. Step 4: Simplify right side
    2,058.90x = 2,076,575.66
  5. Step 5: Solve for x
    x = 2,076,575.66/2,058.90
  6. Step 6: Final answer
    x = 1,008.59

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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.