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Finding the Fourth Proportional to 6,443.52, 9,622.20 and 5,509.32

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Solution

The fourth proportional to 6,443.52, 9,622.20 and 5,509.32 is: 8,227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.52 : 9,622.20 = 5,509.32 : x
  2. Step 2: Convert to fraction form
    6,443.52/9,622.20 = 5,509.32/x
  3. Step 3: Cross multiply
    6,443.52x = 9,622.20 × 5,509.32
  4. Step 4: Simplify right side
    6,443.52x = 53,011,778.90
  5. Step 5: Solve for x
    x = 53,011,778.90/6,443.52
  6. Step 6: Final answer
    x = 8,227.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.