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Finding the Fourth Proportional to 7,012.60, 10,509.90 and 3,306.76

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Solution

The fourth proportional to 7,012.60, 10,509.90 and 3,306.76 is: 4,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.60 : 10,509.90 = 3,306.76 : x
  2. Step 2: Convert to fraction form
    7,012.60/10,509.90 = 3,306.76/x
  3. Step 3: Cross multiply
    7,012.60x = 10,509.90 × 3,306.76
  4. Step 4: Simplify right side
    7,012.60x = 34,753,716.92
  5. Step 5: Solve for x
    x = 34,753,716.92/7,012.60
  6. Step 6: Final answer
    x = 4,955.90

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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.