Home / 7,518.68-11,271.94-3,139.41

Finding the Fourth Proportional to 7,518.68, 11,271.94 and 3,139.41

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Solution

The fourth proportional to 7,518.68, 11,271.94 and 3,139.41 is: 4,706.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.68 : 11,271.94 = 3,139.41 : x
  2. Step 2: Convert to fraction form
    7,518.68/11,271.94 = 3,139.41/x
  3. Step 3: Cross multiply
    7,518.68x = 11,271.94 × 3,139.41
  4. Step 4: Simplify right side
    7,518.68x = 35,387,241.16
  5. Step 5: Solve for x
    x = 35,387,241.16/7,518.68
  6. Step 6: Final answer
    x = 4,706.58

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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.