Home / 7,271.76-10,912.44-3,987.18

Finding the Fourth Proportional to 7,271.76, 10,912.44 and 3,987.18

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Solution

The fourth proportional to 7,271.76, 10,912.44 and 3,987.18 is: 5,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,271.76 : 10,912.44 = 3,987.18 : x
  2. Step 2: Convert to fraction form
    7,271.76/10,912.44 = 3,987.18/x
  3. Step 3: Cross multiply
    7,271.76x = 10,912.44 × 3,987.18
  4. Step 4: Simplify right side
    7,271.76x = 43,509,862.52
  5. Step 5: Solve for x
    x = 43,509,862.52/7,271.76
  6. Step 6: Final answer
    x = 5,983.40

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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.