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Finding the Fourth Proportional to 2,684.56, 4,031.64 and 1,762

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Solution

The fourth proportional to 2,684.56, 4,031.64 and 1,762 is: 2,646.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,684.56 : 4,031.64 = 1,762 : x
  2. Step 2: Convert to fraction form
    2,684.56/4,031.64 = 1,762/x
  3. Step 3: Cross multiply
    2,684.56x = 4,031.64 × 1,762
  4. Step 4: Simplify right side
    2,684.56x = 7,103,749.68
  5. Step 5: Solve for x
    x = 7,103,749.68/2,684.56
  6. Step 6: Final answer
    x = 2,646.15

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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.