Home / 3,140.40-4,706.71-2,749.48

Finding the Fourth Proportional to 3,140.40, 4,706.71 and 2,749.48

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Solution

The fourth proportional to 3,140.40, 4,706.71 and 2,749.48 is: 4,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.40 : 4,706.71 = 2,749.48 : x
  2. Step 2: Convert to fraction form
    3,140.40/4,706.71 = 2,749.48/x
  3. Step 3: Cross multiply
    3,140.40x = 4,706.71 × 2,749.48
  4. Step 4: Simplify right side
    3,140.40x = 12,940,986.37
  5. Step 5: Solve for x
    x = 12,940,986.37/3,140.40
  6. Step 6: Final answer
    x = 4,120.80

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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.