Home / 3,881.32-5,816.94-1,687.12

Finding the Fourth Proportional to 3,881.32, 5,816.94 and 1,687.12

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Solution

The fourth proportional to 3,881.32, 5,816.94 and 1,687.12 is: 2,528.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.32 : 5,816.94 = 1,687.12 : x
  2. Step 2: Convert to fraction form
    3,881.32/5,816.94 = 1,687.12/x
  3. Step 3: Cross multiply
    3,881.32x = 5,816.94 × 1,687.12
  4. Step 4: Simplify right side
    3,881.32x = 9,813,875.81
  5. Step 5: Solve for x
    x = 9,813,875.81/3,881.32
  6. Step 6: Final answer
    x = 2,528.49

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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.