Home / 2,911.40-4,367.66-1,245.50

Finding the Fourth Proportional to 2,911.40, 4,367.66 and 1,245.50

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Solution

The fourth proportional to 2,911.40, 4,367.66 and 1,245.50 is: 1,868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.40 : 4,367.66 = 1,245.50 : x
  2. Step 2: Convert to fraction form
    2,911.40/4,367.66 = 1,245.50/x
  3. Step 3: Cross multiply
    2,911.40x = 4,367.66 × 1,245.50
  4. Step 4: Simplify right side
    2,911.40x = 5,439,920.53
  5. Step 5: Solve for x
    x = 5,439,920.53/2,911.40
  6. Step 6: Final answer
    x = 1,868.49

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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.