Home / 2,822.50-3,895.05-1,643.50

Finding the Fourth Proportional to 2,822.50, 3,895.05 and 1,643.50

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Solution

The fourth proportional to 2,822.50, 3,895.05 and 1,643.50 is: 2,268.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.50 : 3,895.05 = 1,643.50 : x
  2. Step 2: Convert to fraction form
    2,822.50/3,895.05 = 1,643.50/x
  3. Step 3: Cross multiply
    2,822.50x = 3,895.05 × 1,643.50
  4. Step 4: Simplify right side
    2,822.50x = 6,401,514.68
  5. Step 5: Solve for x
    x = 6,401,514.68/2,822.50
  6. Step 6: Final answer
    x = 2,268.03

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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.