Home / 5,135.77-7,087.35-2,777.95

Finding the Fourth Proportional to 5,135.77, 7,087.35 and 2,777.95

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Solution

The fourth proportional to 5,135.77, 7,087.35 and 2,777.95 is: 3,833.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.77 : 7,087.35 = 2,777.95 : x
  2. Step 2: Convert to fraction form
    5,135.77/7,087.35 = 2,777.95/x
  3. Step 3: Cross multiply
    5,135.77x = 7,087.35 × 2,777.95
  4. Step 4: Simplify right side
    5,135.77x = 19,688,303.93
  5. Step 5: Solve for x
    x = 19,688,303.93/5,135.77
  6. Step 6: Final answer
    x = 3,833.56

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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.