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Finding the Fourth Proportional to 3,140.62, 4,710.86 and 1,682.62

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Solution

The fourth proportional to 3,140.62, 4,710.86 and 1,682.62 is: 2,523.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.62 : 4,710.86 = 1,682.62 : x
  2. Step 2: Convert to fraction form
    3,140.62/4,710.86 = 1,682.62/x
  3. Step 3: Cross multiply
    3,140.62x = 4,710.86 × 1,682.62
  4. Step 4: Simplify right side
    3,140.62x = 7,926,587.25
  5. Step 5: Solve for x
    x = 7,926,587.25/3,140.62
  6. Step 6: Final answer
    x = 2,523.89

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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.