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Finding the Fourth Proportional to 2,581.62, 3,562.62 and 1,402.68

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Solution

The fourth proportional to 2,581.62, 3,562.62 and 1,402.68 is: 1,935.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,581.62 : 3,562.62 = 1,402.68 : x
  2. Step 2: Convert to fraction form
    2,581.62/3,562.62 = 1,402.68/x
  3. Step 3: Cross multiply
    2,581.62x = 3,562.62 × 1,402.68
  4. Step 4: Simplify right side
    2,581.62x = 4,997,215.82
  5. Step 5: Solve for x
    x = 4,997,215.82/2,581.62
  6. Step 6: Final answer
    x = 1,935.69

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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.