Home / 4,119.75-5,685.38-2,256.87

Finding the Fourth Proportional to 4,119.75, 5,685.38 and 2,256.87

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Solution

The fourth proportional to 4,119.75, 5,685.38 and 2,256.87 is: 3,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119.75 : 5,685.38 = 2,256.87 : x
  2. Step 2: Convert to fraction form
    4,119.75/5,685.38 = 2,256.87/x
  3. Step 3: Cross multiply
    4,119.75x = 5,685.38 × 2,256.87
  4. Step 4: Simplify right side
    4,119.75x = 12,831,152.28
  5. Step 5: Solve for x
    x = 12,831,152.28/4,119.75
  6. Step 6: Final answer
    x = 3,114.55

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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.