Home / 5,135.31-7,086.74-2,777.46

Finding the Fourth Proportional to 5,135.31, 7,086.74 and 2,777.46

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Solution

The fourth proportional to 5,135.31, 7,086.74 and 2,777.46 is: 3,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.31 : 7,086.74 = 2,777.46 : x
  2. Step 2: Convert to fraction form
    5,135.31/7,086.74 = 2,777.46/x
  3. Step 3: Cross multiply
    5,135.31x = 7,086.74 × 2,777.46
  4. Step 4: Simplify right side
    5,135.31x = 19,683,136.88
  5. Step 5: Solve for x
    x = 19,683,136.88/5,135.31
  6. Step 6: Final answer
    x = 3,832.90

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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.