Home / 2,812.45-3,881.66-1,634.20

Finding the Fourth Proportional to 2,812.45, 3,881.66 and 1,634.20

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Solution

The fourth proportional to 2,812.45, 3,881.66 and 1,634.20 is: 2,255.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.45 : 3,881.66 = 1,634.20 : x
  2. Step 2: Convert to fraction form
    2,812.45/3,881.66 = 1,634.20/x
  3. Step 3: Cross multiply
    2,812.45x = 3,881.66 × 1,634.20
  4. Step 4: Simplify right side
    2,812.45x = 6,343,410.31
  5. Step 5: Solve for x
    x = 6,343,410.31/2,812.45
  6. Step 6: Final answer
    x = 2,255.47

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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.