Home / 2,381.13-3,285.99-1,318.86

Finding the Fourth Proportional to 2,381.13, 3,285.99 and 1,318.86

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Solution

The fourth proportional to 2,381.13, 3,285.99 and 1,318.86 is: 1,820.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.13 : 3,285.99 = 1,318.86 : x
  2. Step 2: Convert to fraction form
    2,381.13/3,285.99 = 1,318.86/x
  3. Step 3: Cross multiply
    2,381.13x = 3,285.99 × 1,318.86
  4. Step 4: Simplify right side
    2,381.13x = 4,333,760.77
  5. Step 5: Solve for x
    x = 4,333,760.77/2,381.13
  6. Step 6: Final answer
    x = 1,820.04

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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.