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Finding the Fourth Proportional to 4,986.22, 7,479.94 and 2,066.58

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Solution

The fourth proportional to 4,986.22, 7,479.94 and 2,066.58 is: 3,100.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.22 : 7,479.94 = 2,066.58 : x
  2. Step 2: Convert to fraction form
    4,986.22/7,479.94 = 2,066.58/x
  3. Step 3: Cross multiply
    4,986.22x = 7,479.94 × 2,066.58
  4. Step 4: Simplify right side
    4,986.22x = 15,457,894.41
  5. Step 5: Solve for x
    x = 15,457,894.41/4,986.22
  6. Step 6: Final answer
    x = 3,100.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.