Home / 5,103.90-7,043.40-2,865.87

Finding the Fourth Proportional to 5,103.90, 7,043.40 and 2,865.87

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Solution

The fourth proportional to 5,103.90, 7,043.40 and 2,865.87 is: 3,954.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,103.90 : 7,043.40 = 2,865.87 : x
  2. Step 2: Convert to fraction form
    5,103.90/7,043.40 = 2,865.87/x
  3. Step 3: Cross multiply
    5,103.90x = 7,043.40 × 2,865.87
  4. Step 4: Simplify right side
    5,103.90x = 20,185,468.76
  5. Step 5: Solve for x
    x = 20,185,468.76/5,103.90
  6. Step 6: Final answer
    x = 3,954.91

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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.