Home / 3,615.96-4,988.79-2,199.21

Finding the Fourth Proportional to 3,615.96, 4,988.79 and 2,199.21

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Solution

The fourth proportional to 3,615.96, 4,988.79 and 2,199.21 is: 3,034.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.96 : 4,988.79 = 2,199.21 : x
  2. Step 2: Convert to fraction form
    3,615.96/4,988.79 = 2,199.21/x
  3. Step 3: Cross multiply
    3,615.96x = 4,988.79 × 2,199.21
  4. Step 4: Simplify right side
    3,615.96x = 10,971,396.86
  5. Step 5: Solve for x
    x = 10,971,396.86/3,615.96
  6. Step 6: Final answer
    x = 3,034.16

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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.