Home / 5,135.45-7,086.90-2,777.58

Finding the Fourth Proportional to 5,135.45, 7,086.90 and 2,777.58

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Solution

The fourth proportional to 5,135.45, 7,086.90 and 2,777.58 is: 3,833.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.45 : 7,086.90 = 2,777.58 : x
  2. Step 2: Convert to fraction form
    5,135.45/7,086.90 = 2,777.58/x
  3. Step 3: Cross multiply
    5,135.45x = 7,086.90 × 2,777.58
  4. Step 4: Simplify right side
    5,135.45x = 19,684,431.70
  5. Step 5: Solve for x
    x = 19,684,431.70/5,135.45
  6. Step 6: Final answer
    x = 3,833.05

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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.