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Finding the Fourth Proportional to 2,070.14, 3,103.68 and 682.68

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Solution

The fourth proportional to 2,070.14, 3,103.68 and 682.68 is: 1,023.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.14 : 3,103.68 = 682.68 : x
  2. Step 2: Convert to fraction form
    2,070.14/3,103.68 = 682.68/x
  3. Step 3: Cross multiply
    2,070.14x = 3,103.68 × 682.68
  4. Step 4: Simplify right side
    2,070.14x = 2,118,820.26
  5. Step 5: Solve for x
    x = 2,118,820.26/2,070.14
  6. Step 6: Final answer
    x = 1,023.52

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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.