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Finding the Fourth Proportional to 6,447.72, 9,618.21 and 6,363.24

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Solution

The fourth proportional to 6,447.72, 9,618.21 and 6,363.24 is: 9,492.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.72 : 9,618.21 = 6,363.24 : x
  2. Step 2: Convert to fraction form
    6,447.72/9,618.21 = 6,363.24/x
  3. Step 3: Cross multiply
    6,447.72x = 9,618.21 × 6,363.24
  4. Step 4: Simplify right side
    6,447.72x = 61,202,978.60
  5. Step 5: Solve for x
    x = 61,202,978.60/6,447.72
  6. Step 6: Final answer
    x = 9,492.19

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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.