Home / 1,985.17-2,739.60-1,101.06

Finding the Fourth Proportional to 1,985.17, 2,739.60 and 1,101.06

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Solution

The fourth proportional to 1,985.17, 2,739.60 and 1,101.06 is: 1,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.17 : 2,739.60 = 1,101.06 : x
  2. Step 2: Convert to fraction form
    1,985.17/2,739.60 = 1,101.06/x
  3. Step 3: Cross multiply
    1,985.17x = 2,739.60 × 1,101.06
  4. Step 4: Simplify right side
    1,985.17x = 3,016,463.98
  5. Step 5: Solve for x
    x = 3,016,463.98/1,985.17
  6. Step 6: Final answer
    x = 1,519.50

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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.