Home / 2,121.08-2,926.58-1,224.81

Finding the Fourth Proportional to 2,121.08, 2,926.58 and 1,224.81

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Solution

The fourth proportional to 2,121.08, 2,926.58 and 1,224.81 is: 1,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.08 : 2,926.58 = 1,224.81 : x
  2. Step 2: Convert to fraction form
    2,121.08/2,926.58 = 1,224.81/x
  3. Step 3: Cross multiply
    2,121.08x = 2,926.58 × 1,224.81
  4. Step 4: Simplify right side
    2,121.08x = 3,584,498.33
  5. Step 5: Solve for x
    x = 3,584,498.33/2,121.08
  6. Step 6: Final answer
    x = 1,689.94

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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.