Home / 6,491.20-9,737.16-2,109.04

Finding the Fourth Proportional to 6,491.20, 9,737.16 and 2,109.04

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Solution

The fourth proportional to 6,491.20, 9,737.16 and 2,109.04 is: 3,163.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491.20 : 9,737.16 = 2,109.04 : x
  2. Step 2: Convert to fraction form
    6,491.20/9,737.16 = 2,109.04/x
  3. Step 3: Cross multiply
    6,491.20x = 9,737.16 × 2,109.04
  4. Step 4: Simplify right side
    6,491.20x = 20,536,059.93
  5. Step 5: Solve for x
    x = 20,536,059.93/6,491.20
  6. Step 6: Final answer
    x = 3,163.68

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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.