Home / 7,291.15-10,938.25-2,611.28

Finding the Fourth Proportional to 7,291.15, 10,938.25 and 2,611.28

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Solution

The fourth proportional to 7,291.15, 10,938.25 and 2,611.28 is: 3,917.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,291.15 : 10,938.25 = 2,611.28 : x
  2. Step 2: Convert to fraction form
    7,291.15/10,938.25 = 2,611.28/x
  3. Step 3: Cross multiply
    7,291.15x = 10,938.25 × 2,611.28
  4. Step 4: Simplify right side
    7,291.15x = 28,562,833.46
  5. Step 5: Solve for x
    x = 28,562,833.46/7,291.15
  6. Step 6: Final answer
    x = 3,917.47

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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.