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Finding the Fourth Proportional to 3,099.96, 4,649.96 and 759.98

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Solution

The fourth proportional to 3,099.96, 4,649.96 and 759.98 is: 1,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.96 : 4,649.96 = 759.98 : x
  2. Step 2: Convert to fraction form
    3,099.96/4,649.96 = 759.98/x
  3. Step 3: Cross multiply
    3,099.96x = 4,649.96 × 759.98
  4. Step 4: Simplify right side
    3,099.96x = 3,533,885.85
  5. Step 5: Solve for x
    x = 3,533,885.85/3,099.96
  6. Step 6: Final answer
    x = 1,139.98

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1.5x scale

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.