Home / 3,987.84-5,503.83-3,042.03

Finding the Fourth Proportional to 3,987.84, 5,503.83 and 3,042.03

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Solution

The fourth proportional to 3,987.84, 5,503.83 and 3,042.03 is: 4,198.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.84 : 5,503.83 = 3,042.03 : x
  2. Step 2: Convert to fraction form
    3,987.84/5,503.83 = 3,042.03/x
  3. Step 3: Cross multiply
    3,987.84x = 5,503.83 × 3,042.03
  4. Step 4: Simplify right side
    3,987.84x = 16,742,815.97
  5. Step 5: Solve for x
    x = 16,742,815.97/3,987.84
  6. Step 6: Final answer
    x = 4,198.47

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1.5x scale

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.