Home / 1,853.12-2,777.30-1,387.25

Finding the Fourth Proportional to 1,853.12, 2,777.30 and 1,387.25

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Solution

The fourth proportional to 1,853.12, 2,777.30 and 1,387.25 is: 2,079.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.12 : 2,777.30 = 1,387.25 : x
  2. Step 2: Convert to fraction form
    1,853.12/2,777.30 = 1,387.25/x
  3. Step 3: Cross multiply
    1,853.12x = 2,777.30 × 1,387.25
  4. Step 4: Simplify right side
    1,853.12x = 3,852,804.22
  5. Step 5: Solve for x
    x = 3,852,804.22/1,853.12
  6. Step 6: Final answer
    x = 2,079.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.