Home / 1,820.13-2,512.09-1,377.26

Finding the Fourth Proportional to 1,820.13, 2,512.09 and 1,377.26

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Solution

The fourth proportional to 1,820.13, 2,512.09 and 1,377.26 is: 1,900.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.13 : 2,512.09 = 1,377.26 : x
  2. Step 2: Convert to fraction form
    1,820.13/2,512.09 = 1,377.26/x
  3. Step 3: Cross multiply
    1,820.13x = 2,512.09 × 1,377.26
  4. Step 4: Simplify right side
    1,820.13x = 3,459,801.07
  5. Step 5: Solve for x
    x = 3,459,801.07/1,820.13
  6. Step 6: Final answer
    x = 1,900.85

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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.