Home / 2,816.85-4,221.63-1,891.02

Finding the Fourth Proportional to 2,816.85, 4,221.63 and 1,891.02

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Solution

The fourth proportional to 2,816.85, 4,221.63 and 1,891.02 is: 2,834.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.85 : 4,221.63 = 1,891.02 : x
  2. Step 2: Convert to fraction form
    2,816.85/4,221.63 = 1,891.02/x
  3. Step 3: Cross multiply
    2,816.85x = 4,221.63 × 1,891.02
  4. Step 4: Simplify right side
    2,816.85x = 7,983,186.76
  5. Step 5: Solve for x
    x = 7,983,186.76/2,816.85
  6. Step 6: Final answer
    x = 2,834.08

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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.