Home / 1,985.61-2,739.85-1,101.41

Finding the Fourth Proportional to 1,985.61, 2,739.85 and 1,101.41

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Solution

The fourth proportional to 1,985.61, 2,739.85 and 1,101.41 is: 1,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.61 : 2,739.85 = 1,101.41 : x
  2. Step 2: Convert to fraction form
    1,985.61/2,739.85 = 1,101.41/x
  3. Step 3: Cross multiply
    1,985.61x = 2,739.85 × 1,101.41
  4. Step 4: Simplify right side
    1,985.61x = 3,017,698.19
  5. Step 5: Solve for x
    x = 3,017,698.19/1,985.61
  6. Step 6: Final answer
    x = 1,519.78

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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.