Home / 1,541.35-2,126.32-1,121.05

Finding the Fourth Proportional to 1,541.35, 2,126.32 and 1,121.05

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Solution

The fourth proportional to 1,541.35, 2,126.32 and 1,121.05 is: 1,546.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.35 : 2,126.32 = 1,121.05 : x
  2. Step 2: Convert to fraction form
    1,541.35/2,126.32 = 1,121.05/x
  3. Step 3: Cross multiply
    1,541.35x = 2,126.32 × 1,121.05
  4. Step 4: Simplify right side
    1,541.35x = 2,383,711.04
  5. Step 5: Solve for x
    x = 2,383,711.04/1,541.35
  6. Step 6: Final answer
    x = 1,546.51

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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.