Home / 4,145.40-5,718.60-2,731.50

Finding the Fourth Proportional to 4,145.40, 5,718.60 and 2,731.50

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Solution

The fourth proportional to 4,145.40, 5,718.60 and 2,731.50 is: 3,768.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.40 : 5,718.60 = 2,731.50 : x
  2. Step 2: Convert to fraction form
    4,145.40/5,718.60 = 2,731.50/x
  3. Step 3: Cross multiply
    4,145.40x = 5,718.60 × 2,731.50
  4. Step 4: Simplify right side
    4,145.40x = 15,620,355.90
  5. Step 5: Solve for x
    x = 15,620,355.90/4,145.40
  6. Step 6: Final answer
    x = 3,768.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.