Home / 2,618.21-3,924.87-1,318.16

Finding the Fourth Proportional to 2,618.21, 3,924.87 and 1,318.16

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Solution

The fourth proportional to 2,618.21, 3,924.87 and 1,318.16 is: 1,976.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.21 : 3,924.87 = 1,318.16 : x
  2. Step 2: Convert to fraction form
    2,618.21/3,924.87 = 1,318.16/x
  3. Step 3: Cross multiply
    2,618.21x = 3,924.87 × 1,318.16
  4. Step 4: Simplify right side
    2,618.21x = 5,173,587.01
  5. Step 5: Solve for x
    x = 5,173,587.01/2,618.21
  6. Step 6: Final answer
    x = 1,976.01

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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.