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Finding the Fourth Proportional to 8,649.19, 11,935.92 and 4,872.16

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Solution

The fourth proportional to 8,649.19, 11,935.92 and 4,872.16 is: 6,723.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.19 : 11,935.92 = 4,872.16 : x
  2. Step 2: Convert to fraction form
    8,649.19/11,935.92 = 4,872.16/x
  3. Step 3: Cross multiply
    8,649.19x = 11,935.92 × 4,872.16
  4. Step 4: Simplify right side
    8,649.19x = 58,153,711.99
  5. Step 5: Solve for x
    x = 58,153,711.99/8,649.19
  6. Step 6: Final answer
    x = 6,723.60

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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.