Home / 3,615.12-4,987.44-2,215.44

Finding the Fourth Proportional to 3,615.12, 4,987.44 and 2,215.44

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Solution

The fourth proportional to 3,615.12, 4,987.44 and 2,215.44 is: 3,056.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.12 : 4,987.44 = 2,215.44 : x
  2. Step 2: Convert to fraction form
    3,615.12/4,987.44 = 2,215.44/x
  3. Step 3: Cross multiply
    3,615.12x = 4,987.44 × 2,215.44
  4. Step 4: Simplify right side
    3,615.12x = 11,049,374.07
  5. Step 5: Solve for x
    x = 11,049,374.07/3,615.12
  6. Step 6: Final answer
    x = 3,056.43

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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.