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Finding the Fourth Proportional to 7,581.29, 10,440.44 and 7,556.67

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Solution

The fourth proportional to 7,581.29, 10,440.44 and 7,556.67 is: 10,406.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,581.29 : 10,440.44 = 7,556.67 : x
  2. Step 2: Convert to fraction form
    7,581.29/10,440.44 = 7,556.67/x
  3. Step 3: Cross multiply
    7,581.29x = 10,440.44 × 7,556.67
  4. Step 4: Simplify right side
    7,581.29x = 78,894,921.95
  5. Step 5: Solve for x
    x = 78,894,921.95/7,581.29
  6. Step 6: Final answer
    x = 10,406.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.