Home / 2,840.13-3,919.98-1,645.32

Finding the Fourth Proportional to 2,840.13, 3,919.98 and 1,645.32

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Solution

The fourth proportional to 2,840.13, 3,919.98 and 1,645.32 is: 2,270.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.13 : 3,919.98 = 1,645.32 : x
  2. Step 2: Convert to fraction form
    2,840.13/3,919.98 = 1,645.32/x
  3. Step 3: Cross multiply
    2,840.13x = 3,919.98 × 1,645.32
  4. Step 4: Simplify right side
    2,840.13x = 6,449,642.36
  5. Step 5: Solve for x
    x = 6,449,642.36/2,840.13
  6. Step 6: Final answer
    x = 2,270.90

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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.