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Finding the Fourth Proportional to 2,407.90, 3,611.68 and 676.53

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Solution

The fourth proportional to 2,407.90, 3,611.68 and 676.53 is: 1,014.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.90 : 3,611.68 = 676.53 : x
  2. Step 2: Convert to fraction form
    2,407.90/3,611.68 = 676.53/x
  3. Step 3: Cross multiply
    2,407.90x = 3,611.68 × 676.53
  4. Step 4: Simplify right side
    2,407.90x = 2,443,409.87
  5. Step 5: Solve for x
    x = 2,443,409.87/2,407.90
  6. Step 6: Final answer
    x = 1,014.75

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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.