Home / 2,381.81-3,570.48-1,286.28

Finding the Fourth Proportional to 2,381.81, 3,570.48 and 1,286.28

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Solution

The fourth proportional to 2,381.81, 3,570.48 and 1,286.28 is: 1,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.81 : 3,570.48 = 1,286.28 : x
  2. Step 2: Convert to fraction form
    2,381.81/3,570.48 = 1,286.28/x
  3. Step 3: Cross multiply
    2,381.81x = 3,570.48 × 1,286.28
  4. Step 4: Simplify right side
    2,381.81x = 4,592,637.01
  5. Step 5: Solve for x
    x = 4,592,637.01/2,381.81
  6. Step 6: Final answer
    x = 1,928.22

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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.