Home / 5,135.60-7,086.56-2,897.24

Finding the Fourth Proportional to 5,135.60, 7,086.56 and 2,897.24

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Solution

The fourth proportional to 5,135.60, 7,086.56 and 2,897.24 is: 3,997.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.60 : 7,086.56 = 2,897.24 : x
  2. Step 2: Convert to fraction form
    5,135.60/7,086.56 = 2,897.24/x
  3. Step 3: Cross multiply
    5,135.60x = 7,086.56 × 2,897.24
  4. Step 4: Simplify right side
    5,135.60x = 20,531,415.18
  5. Step 5: Solve for x
    x = 20,531,415.18/5,135.60
  6. Step 6: Final answer
    x = 3,997.86

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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.