Home / 2,131.05-2,941.25-1,199.55

Finding the Fourth Proportional to 2,131.05, 2,941.25 and 1,199.55

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Solution

The fourth proportional to 2,131.05, 2,941.25 and 1,199.55 is: 1,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.05 : 2,941.25 = 1,199.55 : x
  2. Step 2: Convert to fraction form
    2,131.05/2,941.25 = 1,199.55/x
  3. Step 3: Cross multiply
    2,131.05x = 2,941.25 × 1,199.55
  4. Step 4: Simplify right side
    2,131.05x = 3,528,176.44
  5. Step 5: Solve for x
    x = 3,528,176.44/2,131.05
  6. Step 6: Final answer
    x = 1,655.60

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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.