Home / 3,615.67-4,987.88-2,122.64

Finding the Fourth Proportional to 3,615.67, 4,987.88 and 2,122.64

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Solution

The fourth proportional to 3,615.67, 4,987.88 and 2,122.64 is: 2,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.67 : 4,987.88 = 2,122.64 : x
  2. Step 2: Convert to fraction form
    3,615.67/4,987.88 = 2,122.64/x
  3. Step 3: Cross multiply
    3,615.67x = 4,987.88 × 2,122.64
  4. Step 4: Simplify right side
    3,615.67x = 10,587,464.72
  5. Step 5: Solve for x
    x = 10,587,464.72/3,615.67
  6. Step 6: Final answer
    x = 2,928.22

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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.