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Finding the Fourth Proportional to 8,390.84, 11,579.11 and 4,614.00

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Solution

The fourth proportional to 8,390.84, 11,579.11 and 4,614.00 is: 6,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.84 : 11,579.11 = 4,614.00 : x
  2. Step 2: Convert to fraction form
    8,390.84/11,579.11 = 4,614.00/x
  3. Step 3: Cross multiply
    8,390.84x = 11,579.11 × 4,614.00
  4. Step 4: Simplify right side
    8,390.84x = 53,425,958.58
  5. Step 5: Solve for x
    x = 53,425,958.58/8,390.84
  6. Step 6: Final answer
    x = 6,367.18

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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.