Home / 3,985.20-5,499.36-2,492.64

Finding the Fourth Proportional to 3,985.20, 5,499.36 and 2,492.64

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Solution

The fourth proportional to 3,985.20, 5,499.36 and 2,492.64 is: 3,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.20 : 5,499.36 = 2,492.64 : x
  2. Step 2: Convert to fraction form
    3,985.20/5,499.36 = 2,492.64/x
  3. Step 3: Cross multiply
    3,985.20x = 5,499.36 × 2,492.64
  4. Step 4: Simplify right side
    3,985.20x = 13,707,924.71
  5. Step 5: Solve for x
    x = 13,707,924.71/3,985.20
  6. Step 6: Final answer
    x = 3,439.71

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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.