Home / 3,140.66-4,711.80-2,705.90

Finding the Fourth Proportional to 3,140.66, 4,711.80 and 2,705.90

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Solution

The fourth proportional to 3,140.66, 4,711.80 and 2,705.90 is: 4,059.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.66 : 4,711.80 = 2,705.90 : x
  2. Step 2: Convert to fraction form
    3,140.66/4,711.80 = 2,705.90/x
  3. Step 3: Cross multiply
    3,140.66x = 4,711.80 × 2,705.90
  4. Step 4: Simplify right side
    3,140.66x = 12,749,636.06
  5. Step 5: Solve for x
    x = 12,749,636.06/3,140.66
  6. Step 6: Final answer
    x = 4,059.55

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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.