Home / 2,860.86-3,949.20-1,742.16

Finding the Fourth Proportional to 2,860.86, 3,949.20 and 1,742.16

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Solution

The fourth proportional to 2,860.86, 3,949.20 and 1,742.16 is: 2,404.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.86 : 3,949.20 = 1,742.16 : x
  2. Step 2: Convert to fraction form
    2,860.86/3,949.20 = 1,742.16/x
  3. Step 3: Cross multiply
    2,860.86x = 3,949.20 × 1,742.16
  4. Step 4: Simplify right side
    2,860.86x = 6,880,138.27
  5. Step 5: Solve for x
    x = 6,880,138.27/2,860.86
  6. Step 6: Final answer
    x = 2,404.92

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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.