Home / 7,402.60-11,100-2,721.40

Finding the Fourth Proportional to 7,402.60, 11,100 and 2,721.40

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Solution

The fourth proportional to 7,402.60, 11,100 and 2,721.40 is: 4,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,402.60 : 11,100 = 2,721.40 : x
  2. Step 2: Convert to fraction form
    7,402.60/11,100 = 2,721.40/x
  3. Step 3: Cross multiply
    7,402.60x = 11,100 × 2,721.40
  4. Step 4: Simplify right side
    7,402.60x = 30,207,540
  5. Step 5: Solve for x
    x = 30,207,540/7,402.60
  6. Step 6: Final answer
    x = 4,080.67

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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.