Home / 3,665.40-5,054.97-2,878.08

Finding the Fourth Proportional to 3,665.40, 5,054.97 and 2,878.08

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Solution

The fourth proportional to 3,665.40, 5,054.97 and 2,878.08 is: 3,969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665.40 : 5,054.97 = 2,878.08 : x
  2. Step 2: Convert to fraction form
    3,665.40/5,054.97 = 2,878.08/x
  3. Step 3: Cross multiply
    3,665.40x = 5,054.97 × 2,878.08
  4. Step 4: Simplify right side
    3,665.40x = 14,548,599.89
  5. Step 5: Solve for x
    x = 14,548,599.89/3,665.40
  6. Step 6: Final answer
    x = 3,969.18

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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.