Home / 3,151.21-4,722.70-1,300.21

Finding the Fourth Proportional to 3,151.21, 4,722.70 and 1,300.21

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Solution

The fourth proportional to 3,151.21, 4,722.70 and 1,300.21 is: 1,948.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.21 : 4,722.70 = 1,300.21 : x
  2. Step 2: Convert to fraction form
    3,151.21/4,722.70 = 1,300.21/x
  3. Step 3: Cross multiply
    3,151.21x = 4,722.70 × 1,300.21
  4. Step 4: Simplify right side
    3,151.21x = 6,140,474.90
  5. Step 5: Solve for x
    x = 6,140,474.90/3,151.21
  6. Step 6: Final answer
    x = 1,948.61

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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.