Home / 7,281.26-10,921.89-3,118.57

Finding the Fourth Proportional to 7,281.26, 10,921.89 and 3,118.57

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Solution

The fourth proportional to 7,281.26, 10,921.89 and 3,118.57 is: 4,677.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.26 : 10,921.89 = 3,118.57 : x
  2. Step 2: Convert to fraction form
    7,281.26/10,921.89 = 3,118.57/x
  3. Step 3: Cross multiply
    7,281.26x = 10,921.89 × 3,118.57
  4. Step 4: Simplify right side
    7,281.26x = 34,060,646.17
  5. Step 5: Solve for x
    x = 34,060,646.17/7,281.26
  6. Step 6: Final answer
    x = 4,677.85

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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.