Home / 2,158.84-2,979.62-1,274.60

Finding the Fourth Proportional to 2,158.84, 2,979.62 and 1,274.60

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Solution

The fourth proportional to 2,158.84, 2,979.62 and 1,274.60 is: 1,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.84 : 2,979.62 = 1,274.60 : x
  2. Step 2: Convert to fraction form
    2,158.84/2,979.62 = 1,274.60/x
  3. Step 3: Cross multiply
    2,158.84x = 2,979.62 × 1,274.60
  4. Step 4: Simplify right side
    2,158.84x = 3,797,823.65
  5. Step 5: Solve for x
    x = 3,797,823.65/2,158.84
  6. Step 6: Final answer
    x = 1,759.20

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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.