Home / 7,113.20-10,668.60-2,181.50

Finding the Fourth Proportional to 7,113.20, 10,668.60 and 2,181.50

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Solution

The fourth proportional to 7,113.20, 10,668.60 and 2,181.50 is: 3,271.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.20 : 10,668.60 = 2,181.50 : x
  2. Step 2: Convert to fraction form
    7,113.20/10,668.60 = 2,181.50/x
  3. Step 3: Cross multiply
    7,113.20x = 10,668.60 × 2,181.50
  4. Step 4: Simplify right side
    7,113.20x = 23,273,550.90
  5. Step 5: Solve for x
    x = 23,273,550.90/7,113.20
  6. Step 6: Final answer
    x = 3,271.88

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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.