Home / 1,985.13-2,739.56-1,100.87

Finding the Fourth Proportional to 1,985.13, 2,739.56 and 1,100.87

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Solution

The fourth proportional to 1,985.13, 2,739.56 and 1,100.87 is: 1,519.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.13 : 2,739.56 = 1,100.87 : x
  2. Step 2: Convert to fraction form
    1,985.13/2,739.56 = 1,100.87/x
  3. Step 3: Cross multiply
    1,985.13x = 2,739.56 × 1,100.87
  4. Step 4: Simplify right side
    1,985.13x = 3,015,902.17
  5. Step 5: Solve for x
    x = 3,015,902.17/1,985.13
  6. Step 6: Final answer
    x = 1,519.25

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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.