Home / 2,381.18-3,285.94-1,318.88

Finding the Fourth Proportional to 2,381.18, 3,285.94 and 1,318.88

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Solution

The fourth proportional to 2,381.18, 3,285.94 and 1,318.88 is: 1,820.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.18 : 3,285.94 = 1,318.88 : x
  2. Step 2: Convert to fraction form
    2,381.18/3,285.94 = 1,318.88/x
  3. Step 3: Cross multiply
    2,381.18x = 3,285.94 × 1,318.88
  4. Step 4: Simplify right side
    2,381.18x = 4,333,760.55
  5. Step 5: Solve for x
    x = 4,333,760.55/2,381.18
  6. Step 6: Final answer
    x = 1,820.01

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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.