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Finding the Fourth Proportional to 4,986.60, 7,475.04 and 2,388.12

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Solution

The fourth proportional to 4,986.60, 7,475.04 and 2,388.12 is: 3,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.60 : 7,475.04 = 2,388.12 : x
  2. Step 2: Convert to fraction form
    4,986.60/7,475.04 = 2,388.12/x
  3. Step 3: Cross multiply
    4,986.60x = 7,475.04 × 2,388.12
  4. Step 4: Simplify right side
    4,986.60x = 17,851,292.52
  5. Step 5: Solve for x
    x = 17,851,292.52/4,986.60
  6. Step 6: Final answer
    x = 3,579.85

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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.