Home / 5,135.82-7,087.40-2,777.96

Finding the Fourth Proportional to 5,135.82, 7,087.40 and 2,777.96

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Solution

The fourth proportional to 5,135.82, 7,087.40 and 2,777.96 is: 3,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.82 : 7,087.40 = 2,777.96 : x
  2. Step 2: Convert to fraction form
    5,135.82/7,087.40 = 2,777.96/x
  3. Step 3: Cross multiply
    5,135.82x = 7,087.40 × 2,777.96
  4. Step 4: Simplify right side
    5,135.82x = 19,688,513.70
  5. Step 5: Solve for x
    x = 19,688,513.70/5,135.82
  6. Step 6: Final answer
    x = 3,833.57

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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.