Home / 1,621.36-2,236.70-1,558.49

Finding the Fourth Proportional to 1,621.36, 2,236.70 and 1,558.49

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Solution

The fourth proportional to 1,621.36, 2,236.70 and 1,558.49 is: 2,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.36 : 2,236.70 = 1,558.49 : x
  2. Step 2: Convert to fraction form
    1,621.36/2,236.70 = 1,558.49/x
  3. Step 3: Cross multiply
    1,621.36x = 2,236.70 × 1,558.49
  4. Step 4: Simplify right side
    1,621.36x = 3,485,874.58
  5. Step 5: Solve for x
    x = 3,485,874.58/1,621.36
  6. Step 6: Final answer
    x = 2,149.97

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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.