Home / 2,621.11-3,616.81-1,558.90

Finding the Fourth Proportional to 2,621.11, 3,616.81 and 1,558.90

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Solution

The fourth proportional to 2,621.11, 3,616.81 and 1,558.90 is: 2,151.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.11 : 3,616.81 = 1,558.90 : x
  2. Step 2: Convert to fraction form
    2,621.11/3,616.81 = 1,558.90/x
  3. Step 3: Cross multiply
    2,621.11x = 3,616.81 × 1,558.90
  4. Step 4: Simplify right side
    2,621.11x = 5,638,245.11
  5. Step 5: Solve for x
    x = 5,638,245.11/2,621.11
  6. Step 6: Final answer
    x = 2,151.09

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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.