Home / 3,987.98-5,503.66-3,323.68

Finding the Fourth Proportional to 3,987.98, 5,503.66 and 3,323.68

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Solution

The fourth proportional to 3,987.98, 5,503.66 and 3,323.68 is: 4,586.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.98 : 5,503.66 = 3,323.68 : x
  2. Step 2: Convert to fraction form
    3,987.98/5,503.66 = 3,323.68/x
  3. Step 3: Cross multiply
    3,987.98x = 5,503.66 × 3,323.68
  4. Step 4: Simplify right side
    3,987.98x = 18,292,383.40
  5. Step 5: Solve for x
    x = 18,292,383.40/3,987.98
  6. Step 6: Final answer
    x = 4,586.88

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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.