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Finding the Fourth Proportional to 8,424.99, 11,626.71 and 4,648.20

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Solution

The fourth proportional to 8,424.99, 11,626.71 and 4,648.20 is: 6,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.99 : 11,626.71 = 4,648.20 : x
  2. Step 2: Convert to fraction form
    8,424.99/11,626.71 = 4,648.20/x
  3. Step 3: Cross multiply
    8,424.99x = 11,626.71 × 4,648.20
  4. Step 4: Simplify right side
    8,424.99x = 54,043,273.42
  5. Step 5: Solve for x
    x = 54,043,273.42/8,424.99
  6. Step 6: Final answer
    x = 6,414.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.