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Finding the Fourth Proportional to 2,670.12, 4,005.18 and 722.34

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Solution

The fourth proportional to 2,670.12, 4,005.18 and 722.34 is: 1,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.12 : 4,005.18 = 722.34 : x
  2. Step 2: Convert to fraction form
    2,670.12/4,005.18 = 722.34/x
  3. Step 3: Cross multiply
    2,670.12x = 4,005.18 × 722.34
  4. Step 4: Simplify right side
    2,670.12x = 2,893,101.72
  5. Step 5: Solve for x
    x = 2,893,101.72/2,670.12
  6. Step 6: Final answer
    x = 1,083.51

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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.