Home / 3,987.96-5,503.58-2,416.20

Finding the Fourth Proportional to 3,987.96, 5,503.58 and 2,416.20

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Solution

The fourth proportional to 3,987.96, 5,503.58 and 2,416.20 is: 3,334.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.96 : 5,503.58 = 2,416.20 : x
  2. Step 2: Convert to fraction form
    3,987.96/5,503.58 = 2,416.20/x
  3. Step 3: Cross multiply
    3,987.96x = 5,503.58 × 2,416.20
  4. Step 4: Simplify right side
    3,987.96x = 13,297,750.00
  5. Step 5: Solve for x
    x = 13,297,750.00/3,987.96
  6. Step 6: Final answer
    x = 3,334.47

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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.