Home / 2,621.36-3,923.94-1,642.88

Finding the Fourth Proportional to 2,621.36, 3,923.94 and 1,642.88

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Solution

The fourth proportional to 2,621.36, 3,923.94 and 1,642.88 is: 2,459.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.36 : 3,923.94 = 1,642.88 : x
  2. Step 2: Convert to fraction form
    2,621.36/3,923.94 = 1,642.88/x
  3. Step 3: Cross multiply
    2,621.36x = 3,923.94 × 1,642.88
  4. Step 4: Simplify right side
    2,621.36x = 6,446,562.55
  5. Step 5: Solve for x
    x = 6,446,562.55/2,621.36
  6. Step 6: Final answer
    x = 2,459.24

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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.