Home / 2,812.12-3,880.50-1,633.28

Finding the Fourth Proportional to 2,812.12, 3,880.50 and 1,633.28

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Solution

The fourth proportional to 2,812.12, 3,880.50 and 1,633.28 is: 2,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.12 : 3,880.50 = 1,633.28 : x
  2. Step 2: Convert to fraction form
    2,812.12/3,880.50 = 1,633.28/x
  3. Step 3: Cross multiply
    2,812.12x = 3,880.50 × 1,633.28
  4. Step 4: Simplify right side
    2,812.12x = 6,337,943.04
  5. Step 5: Solve for x
    x = 6,337,943.04/2,812.12
  6. Step 6: Final answer
    x = 2,253.80

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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.