Home / 5,515.39-7,611.25-3,157.55

Finding the Fourth Proportional to 5,515.39, 7,611.25 and 3,157.55

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Solution

The fourth proportional to 5,515.39, 7,611.25 and 3,157.55 is: 4,357.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.39 : 7,611.25 = 3,157.55 : x
  2. Step 2: Convert to fraction form
    5,515.39/7,611.25 = 3,157.55/x
  3. Step 3: Cross multiply
    5,515.39x = 7,611.25 × 3,157.55
  4. Step 4: Simplify right side
    5,515.39x = 24,032,864.38
  5. Step 5: Solve for x
    x = 24,032,864.38/5,515.39
  6. Step 6: Final answer
    x = 4,357.42

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Half scale
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Double scale
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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.