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Finding the Fourth Proportional to 6,490.55, 9,737.22 and 2,107.91

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Solution

The fourth proportional to 6,490.55, 9,737.22 and 2,107.91 is: 3,162.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490.55 : 9,737.22 = 2,107.91 : x
  2. Step 2: Convert to fraction form
    6,490.55/9,737.22 = 2,107.91/x
  3. Step 3: Cross multiply
    6,490.55x = 9,737.22 × 2,107.91
  4. Step 4: Simplify right side
    6,490.55x = 20,525,183.41
  5. Step 5: Solve for x
    x = 20,525,183.41/6,490.55
  6. Step 6: Final answer
    x = 3,162.32

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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.