Home / 5,135.35-7,086.39-2,897.43

Finding the Fourth Proportional to 5,135.35, 7,086.39 and 2,897.43

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Solution

The fourth proportional to 5,135.35, 7,086.39 and 2,897.43 is: 3,998.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.35 : 7,086.39 = 2,897.43 : x
  2. Step 2: Convert to fraction form
    5,135.35/7,086.39 = 2,897.43/x
  3. Step 3: Cross multiply
    5,135.35x = 7,086.39 × 2,897.43
  4. Step 4: Simplify right side
    5,135.35x = 20,532,349.70
  5. Step 5: Solve for x
    x = 20,532,349.70/5,135.35
  6. Step 6: Final answer
    x = 3,998.24

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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.