Home / 2,812.32-3,881.18-1,617.71

Finding the Fourth Proportional to 2,812.32, 3,881.18 and 1,617.71

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Solution

The fourth proportional to 2,812.32, 3,881.18 and 1,617.71 is: 2,232.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.32 : 3,881.18 = 1,617.71 : x
  2. Step 2: Convert to fraction form
    2,812.32/3,881.18 = 1,617.71/x
  3. Step 3: Cross multiply
    2,812.32x = 3,881.18 × 1,617.71
  4. Step 4: Simplify right side
    2,812.32x = 6,278,608.34
  5. Step 5: Solve for x
    x = 6,278,608.34/2,812.32
  6. Step 6: Final answer
    x = 2,232.54

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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.