Home / 5,515.60-7,611.66-3,158.50

Finding the Fourth Proportional to 5,515.60, 7,611.66 and 3,158.50

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Solution

The fourth proportional to 5,515.60, 7,611.66 and 3,158.50 is: 4,358.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.60 : 7,611.66 = 3,158.50 : x
  2. Step 2: Convert to fraction form
    5,515.60/7,611.66 = 3,158.50/x
  3. Step 3: Cross multiply
    5,515.60x = 7,611.66 × 3,158.50
  4. Step 4: Simplify right side
    5,515.60x = 24,041,428.11
  5. Step 5: Solve for x
    x = 24,041,428.11/5,515.60
  6. Step 6: Final answer
    x = 4,358.81

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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.