Home / 2,812.09-3,880.03-1,633.21

Finding the Fourth Proportional to 2,812.09, 3,880.03 and 1,633.21

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Solution

The fourth proportional to 2,812.09, 3,880.03 and 1,633.21 is: 2,253.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.09 : 3,880.03 = 1,633.21 : x
  2. Step 2: Convert to fraction form
    2,812.09/3,880.03 = 1,633.21/x
  3. Step 3: Cross multiply
    2,812.09x = 3,880.03 × 1,633.21
  4. Step 4: Simplify right side
    2,812.09x = 6,336,903.80
  5. Step 5: Solve for x
    x = 6,336,903.80/2,812.09
  6. Step 6: Final answer
    x = 2,253.45

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1.5x scale

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.