Home / 1,985.48-2,740.12-1,101.36

Finding the Fourth Proportional to 1,985.48, 2,740.12 and 1,101.36

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Solution

The fourth proportional to 1,985.48, 2,740.12 and 1,101.36 is: 1,519.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.48 : 2,740.12 = 1,101.36 : x
  2. Step 2: Convert to fraction form
    1,985.48/2,740.12 = 1,101.36/x
  3. Step 3: Cross multiply
    1,985.48x = 2,740.12 × 1,101.36
  4. Step 4: Simplify right side
    1,985.48x = 3,017,858.56
  5. Step 5: Solve for x
    x = 3,017,858.56/1,985.48
  6. Step 6: Final answer
    x = 1,519.96

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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.