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Finding the Fourth Proportional to 7,002.99, 10,500.39 and 2,620.80

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Solution

The fourth proportional to 7,002.99, 10,500.39 and 2,620.80 is: 3,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,002.99 : 10,500.39 = 2,620.80 : x
  2. Step 2: Convert to fraction form
    7,002.99/10,500.39 = 2,620.80/x
  3. Step 3: Cross multiply
    7,002.99x = 10,500.39 × 2,620.80
  4. Step 4: Simplify right side
    7,002.99x = 27,519,422.11
  5. Step 5: Solve for x
    x = 27,519,422.11/7,002.99
  6. Step 6: Final answer
    x = 3,929.67

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1.5x scale

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.