Home / 3,642.80-5,459.40-2,615.60

Finding the Fourth Proportional to 3,642.80, 5,459.40 and 2,615.60

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Solution

The fourth proportional to 3,642.80, 5,459.40 and 2,615.60 is: 3,919.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.80 : 5,459.40 = 2,615.60 : x
  2. Step 2: Convert to fraction form
    3,642.80/5,459.40 = 2,615.60/x
  3. Step 3: Cross multiply
    3,642.80x = 5,459.40 × 2,615.60
  4. Step 4: Simplify right side
    3,642.80x = 14,279,606.64
  5. Step 5: Solve for x
    x = 14,279,606.64/3,642.80
  6. Step 6: Final answer
    x = 3,919.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.