Home / 5,515.86-7,611.66-3,157.68

Finding the Fourth Proportional to 5,515.86, 7,611.66 and 3,157.68

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Solution

The fourth proportional to 5,515.86, 7,611.66 and 3,157.68 is: 4,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.86 : 7,611.66 = 3,157.68 : x
  2. Step 2: Convert to fraction form
    5,515.86/7,611.66 = 3,157.68/x
  3. Step 3: Cross multiply
    5,515.86x = 7,611.66 × 3,157.68
  4. Step 4: Simplify right side
    5,515.86x = 24,035,186.55
  5. Step 5: Solve for x
    x = 24,035,186.55/5,515.86
  6. Step 6: Final answer
    x = 4,357.47

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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.