Home / 2,811.46-4,216.77-1,145.29

Finding the Fourth Proportional to 2,811.46, 4,216.77 and 1,145.29

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Solution

The fourth proportional to 2,811.46, 4,216.77 and 1,145.29 is: 1,717.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.46 : 4,216.77 = 1,145.29 : x
  2. Step 2: Convert to fraction form
    2,811.46/4,216.77 = 1,145.29/x
  3. Step 3: Cross multiply
    2,811.46x = 4,216.77 × 1,145.29
  4. Step 4: Simplify right side
    2,811.46x = 4,829,424.51
  5. Step 5: Solve for x
    x = 4,829,424.51/2,811.46
  6. Step 6: Final answer
    x = 1,717.76

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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.