Home / 1,999.17-2,759.01-1,115.25

Finding the Fourth Proportional to 1,999.17, 2,759.01 and 1,115.25

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Solution

The fourth proportional to 1,999.17, 2,759.01 and 1,115.25 is: 1,539.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.17 : 2,759.01 = 1,115.25 : x
  2. Step 2: Convert to fraction form
    1,999.17/2,759.01 = 1,115.25/x
  3. Step 3: Cross multiply
    1,999.17x = 2,759.01 × 1,115.25
  4. Step 4: Simplify right side
    1,999.17x = 3,076,985.90
  5. Step 5: Solve for x
    x = 3,076,985.90/1,999.17
  6. Step 6: Final answer
    x = 1,539.13

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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.