Home / 5,515.81-7,611.75-2,997.89

Finding the Fourth Proportional to 5,515.81, 7,611.75 and 2,997.89

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Solution

The fourth proportional to 5,515.81, 7,611.75 and 2,997.89 is: 4,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.81 : 7,611.75 = 2,997.89 : x
  2. Step 2: Convert to fraction form
    5,515.81/7,611.75 = 2,997.89/x
  3. Step 3: Cross multiply
    5,515.81x = 7,611.75 × 2,997.89
  4. Step 4: Simplify right side
    5,515.81x = 22,819,189.21
  5. Step 5: Solve for x
    x = 22,819,189.21/5,515.81
  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.