Home / 5,135.21-7,086.57-2,777.34

Finding the Fourth Proportional to 5,135.21, 7,086.57 and 2,777.34

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Solution

The fourth proportional to 5,135.21, 7,086.57 and 2,777.34 is: 3,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.21 : 7,086.57 = 2,777.34 : x
  2. Step 2: Convert to fraction form
    5,135.21/7,086.57 = 2,777.34/x
  3. Step 3: Cross multiply
    5,135.21x = 7,086.57 × 2,777.34
  4. Step 4: Simplify right side
    5,135.21x = 19,681,814.32
  5. Step 5: Solve for x
    x = 19,681,814.32/5,135.21
  6. Step 6: Final answer
    x = 3,832.72

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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.