Home / 7,712.40-11,566.80-2,515.44

Finding the Fourth Proportional to 7,712.40, 11,566.80 and 2,515.44

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Solution

The fourth proportional to 7,712.40, 11,566.80 and 2,515.44 is: 3,772.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.40 : 11,566.80 = 2,515.44 : x
  2. Step 2: Convert to fraction form
    7,712.40/11,566.80 = 2,515.44/x
  3. Step 3: Cross multiply
    7,712.40x = 11,566.80 × 2,515.44
  4. Step 4: Simplify right side
    7,712.40x = 29,095,591.39
  5. Step 5: Solve for x
    x = 29,095,591.39/7,712.40
  6. Step 6: Final answer
    x = 3,772.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.