Home / 2,114.19-3,168.43-1,126.85

Finding the Fourth Proportional to 2,114.19, 3,168.43 and 1,126.85

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Solution

The fourth proportional to 2,114.19, 3,168.43 and 1,126.85 is: 1,688.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.19 : 3,168.43 = 1,126.85 : x
  2. Step 2: Convert to fraction form
    2,114.19/3,168.43 = 1,126.85/x
  3. Step 3: Cross multiply
    2,114.19x = 3,168.43 × 1,126.85
  4. Step 4: Simplify right side
    2,114.19x = 3,570,326.69
  5. Step 5: Solve for x
    x = 3,570,326.69/2,114.19
  6. Step 6: Final answer
    x = 1,688.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.