Home / 2,811.42-4,216.50-1,078.92

Finding the Fourth Proportional to 2,811.42, 4,216.50 and 1,078.92

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Solution

The fourth proportional to 2,811.42, 4,216.50 and 1,078.92 is: 1,618.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.42 : 4,216.50 = 1,078.92 : x
  2. Step 2: Convert to fraction form
    2,811.42/4,216.50 = 1,078.92/x
  3. Step 3: Cross multiply
    2,811.42x = 4,216.50 × 1,078.92
  4. Step 4: Simplify right side
    2,811.42x = 4,549,266.18
  5. Step 5: Solve for x
    x = 4,549,266.18/2,811.42
  6. Step 6: Final answer
    x = 1,618.14

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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.