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Finding the Fourth Proportional to 2,240.71, 3,361.19 and 854.15

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Solution

The fourth proportional to 2,240.71, 3,361.19 and 854.15 is: 1,281.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.71 : 3,361.19 = 854.15 : x
  2. Step 2: Convert to fraction form
    2,240.71/3,361.19 = 854.15/x
  3. Step 3: Cross multiply
    2,240.71x = 3,361.19 × 854.15
  4. Step 4: Simplify right side
    2,240.71x = 2,870,970.12
  5. Step 5: Solve for x
    x = 2,870,970.12/2,240.71
  6. Step 6: Final answer
    x = 1,281.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.