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Finding the Fourth Proportional to 3,425.99, 5,140.61 and 1,865.93

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Solution

The fourth proportional to 3,425.99, 5,140.61 and 1,865.93 is: 2,799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.99 : 5,140.61 = 1,865.93 : x
  2. Step 2: Convert to fraction form
    3,425.99/5,140.61 = 1,865.93/x
  3. Step 3: Cross multiply
    3,425.99x = 5,140.61 × 1,865.93
  4. Step 4: Simplify right side
    3,425.99x = 9,591,983.38
  5. Step 5: Solve for x
    x = 9,591,983.38/3,425.99
  6. Step 6: Final answer
    x = 2,799.77

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1.5x scale

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.