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Finding the Fourth Proportional to 4,986.93, 7,480.41 and 1,866.81

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Solution

The fourth proportional to 4,986.93, 7,480.41 and 1,866.81 is: 2,800.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.93 : 7,480.41 = 1,866.81 : x
  2. Step 2: Convert to fraction form
    4,986.93/7,480.41 = 1,866.81/x
  3. Step 3: Cross multiply
    4,986.93x = 7,480.41 × 1,866.81
  4. Step 4: Simplify right side
    4,986.93x = 13,964,494.86
  5. Step 5: Solve for x
    x = 13,964,494.86/4,986.93
  6. Step 6: Final answer
    x = 2,800.22

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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.