Home / 2,811.08-4,216.73-1,055.90

Finding the Fourth Proportional to 2,811.08, 4,216.73 and 1,055.90

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Solution

The fourth proportional to 2,811.08, 4,216.73 and 1,055.90 is: 1,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.08 : 4,216.73 = 1,055.90 : x
  2. Step 2: Convert to fraction form
    2,811.08/4,216.73 = 1,055.90/x
  3. Step 3: Cross multiply
    2,811.08x = 4,216.73 × 1,055.90
  4. Step 4: Simplify right side
    2,811.08x = 4,452,445.21
  5. Step 5: Solve for x
    x = 4,452,445.21/2,811.08
  6. Step 6: Final answer
    x = 1,583.89

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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.