Home / 2,638.98-3,643.38-1,853.82

Finding the Fourth Proportional to 2,638.98, 3,643.38 and 1,853.82

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Solution

The fourth proportional to 2,638.98, 3,643.38 and 1,853.82 is: 2,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.98 : 3,643.38 = 1,853.82 : x
  2. Step 2: Convert to fraction form
    2,638.98/3,643.38 = 1,853.82/x
  3. Step 3: Cross multiply
    2,638.98x = 3,643.38 × 1,853.82
  4. Step 4: Simplify right side
    2,638.98x = 6,754,170.71
  5. Step 5: Solve for x
    x = 6,754,170.71/2,638.98
  6. Step 6: Final answer
    x = 2,559.39

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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.