Home / 1,985.13-2,739.47-1,101.06

Finding the Fourth Proportional to 1,985.13, 2,739.47 and 1,101.06

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Solution

The fourth proportional to 1,985.13, 2,739.47 and 1,101.06 is: 1,519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.13 : 2,739.47 = 1,101.06 : x
  2. Step 2: Convert to fraction form
    1,985.13/2,739.47 = 1,101.06/x
  3. Step 3: Cross multiply
    1,985.13x = 2,739.47 × 1,101.06
  4. Step 4: Simplify right side
    1,985.13x = 3,016,320.84
  5. Step 5: Solve for x
    x = 3,016,320.84/1,985.13
  6. Step 6: Final answer
    x = 1,519.46

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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.