Home / 2,642.40-3,961.37-1,666.35

Finding the Fourth Proportional to 2,642.40, 3,961.37 and 1,666.35

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Solution

The fourth proportional to 2,642.40, 3,961.37 and 1,666.35 is: 2,498.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.40 : 3,961.37 = 1,666.35 : x
  2. Step 2: Convert to fraction form
    2,642.40/3,961.37 = 1,666.35/x
  3. Step 3: Cross multiply
    2,642.40x = 3,961.37 × 1,666.35
  4. Step 4: Simplify right side
    2,642.40x = 6,601,028.90
  5. Step 5: Solve for x
    x = 6,601,028.90/2,642.40
  6. Step 6: Final answer
    x = 2,498.12

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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.