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Finding the Fourth Proportional to 2,678.32, 3,692.14 and 1,734

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Solution

The fourth proportional to 2,678.32, 3,692.14 and 1,734 is: 2,390.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.32 : 3,692.14 = 1,734 : x
  2. Step 2: Convert to fraction form
    2,678.32/3,692.14 = 1,734/x
  3. Step 3: Cross multiply
    2,678.32x = 3,692.14 × 1,734
  4. Step 4: Simplify right side
    2,678.32x = 6,402,170.76
  5. Step 5: Solve for x
    x = 6,402,170.76/2,678.32
  6. Step 6: Final answer
    x = 2,390.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.