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Finding the Fourth Proportional to 4,986.23, 7,480.37 and 1,866.18

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Solution

The fourth proportional to 4,986.23, 7,480.37 and 1,866.18 is: 2,799.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.23 : 7,480.37 = 1,866.18 : x
  2. Step 2: Convert to fraction form
    4,986.23/7,480.37 = 1,866.18/x
  3. Step 3: Cross multiply
    4,986.23x = 7,480.37 × 1,866.18
  4. Step 4: Simplify right side
    4,986.23x = 13,959,707.56
  5. Step 5: Solve for x
    x = 13,959,707.56/4,986.23
  6. Step 6: Final answer
    x = 2,799.65

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1.5x scale

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.