Home / 2,205.70-3,315-1,837.86

Finding the Fourth Proportional to 2,205.70, 3,315 and 1,837.86

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Solution

The fourth proportional to 2,205.70, 3,315 and 1,837.86 is: 2,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.70 : 3,315 = 1,837.86 : x
  2. Step 2: Convert to fraction form
    2,205.70/3,315 = 1,837.86/x
  3. Step 3: Cross multiply
    2,205.70x = 3,315 × 1,837.86
  4. Step 4: Simplify right side
    2,205.70x = 6,092,505.90
  5. Step 5: Solve for x
    x = 6,092,505.90/2,205.70
  6. Step 6: Final answer
    x = 2,762.16

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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.