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Finding the Fourth Proportional to 3,391.58, 5,087.22 and 1,051.40

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Solution

The fourth proportional to 3,391.58, 5,087.22 and 1,051.40 is: 1,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.58 : 5,087.22 = 1,051.40 : x
  2. Step 2: Convert to fraction form
    3,391.58/5,087.22 = 1,051.40/x
  3. Step 3: Cross multiply
    3,391.58x = 5,087.22 × 1,051.40
  4. Step 4: Simplify right side
    3,391.58x = 5,348,703.11
  5. Step 5: Solve for x
    x = 5,348,703.11/3,391.58
  6. Step 6: Final answer
    x = 1,577.05

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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.