Home / 5,515.77-7,611.75-2,997.87

Finding the Fourth Proportional to 5,515.77, 7,611.75 and 2,997.87

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Solution

The fourth proportional to 5,515.77, 7,611.75 and 2,997.87 is: 4,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.77 : 7,611.75 = 2,997.87 : x
  2. Step 2: Convert to fraction form
    5,515.77/7,611.75 = 2,997.87/x
  3. Step 3: Cross multiply
    5,515.77x = 7,611.75 × 2,997.87
  4. Step 4: Simplify right side
    5,515.77x = 22,819,036.97
  5. Step 5: Solve for x
    x = 22,819,036.97/5,515.77
  6. Step 6: Final answer
    x = 4,137.05

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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.