Home / 1,975.60-2,727.20-1,179.20

Finding the Fourth Proportional to 1,975.60, 2,727.20 and 1,179.20

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Solution

The fourth proportional to 1,975.60, 2,727.20 and 1,179.20 is: 1,627.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.60 : 2,727.20 = 1,179.20 : x
  2. Step 2: Convert to fraction form
    1,975.60/2,727.20 = 1,179.20/x
  3. Step 3: Cross multiply
    1,975.60x = 2,727.20 × 1,179.20
  4. Step 4: Simplify right side
    1,975.60x = 3,215,924.01
  5. Step 5: Solve for x
    x = 3,215,924.01/1,975.60
  6. Step 6: Final answer
    x = 1,627.82

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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.