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Finding the Fourth Proportional to 5,103.71, 7,042.65 and 2,865.68

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Solution

The fourth proportional to 5,103.71, 7,042.65 and 2,865.68 is: 3,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,103.71 : 7,042.65 = 2,865.68 : x
  2. Step 2: Convert to fraction form
    5,103.71/7,042.65 = 2,865.68/x
  3. Step 3: Cross multiply
    5,103.71x = 7,042.65 × 2,865.68
  4. Step 4: Simplify right side
    5,103.71x = 20,181,981.25
  5. Step 5: Solve for x
    x = 20,181,981.25/5,103.71
  6. Step 6: Final answer
    x = 3,954.37

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1.5x scale

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.