Home / 5,515.59-7,611.85-3,157.68

Finding the Fourth Proportional to 5,515.59, 7,611.85 and 3,157.68

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Solution

The fourth proportional to 5,515.59, 7,611.85 and 3,157.68 is: 4,357.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.59 : 7,611.85 = 3,157.68 : x
  2. Step 2: Convert to fraction form
    5,515.59/7,611.85 = 3,157.68/x
  3. Step 3: Cross multiply
    5,515.59x = 7,611.85 × 3,157.68
  4. Step 4: Simplify right side
    5,515.59x = 24,035,786.51
  5. Step 5: Solve for x
    x = 24,035,786.51/5,515.59
  6. Step 6: Final answer
    x = 4,357.79

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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.