Home / 2,812.08-3,880.90-1,553.25

Finding the Fourth Proportional to 2,812.08, 3,880.90 and 1,553.25

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Solution

The fourth proportional to 2,812.08, 3,880.90 and 1,553.25 is: 2,143.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.08 : 3,880.90 = 1,553.25 : x
  2. Step 2: Convert to fraction form
    2,812.08/3,880.90 = 1,553.25/x
  3. Step 3: Cross multiply
    2,812.08x = 3,880.90 × 1,553.25
  4. Step 4: Simplify right side
    2,812.08x = 6,027,984.64
  5. Step 5: Solve for x
    x = 6,027,984.64/2,812.08
  6. Step 6: Final answer
    x = 2,143.61

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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.