Home / 1,975.82-2,727.42-1,312.46

Finding the Fourth Proportional to 1,975.82, 2,727.42 and 1,312.46

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Solution

The fourth proportional to 1,975.82, 2,727.42 and 1,312.46 is: 1,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.82 : 2,727.42 = 1,312.46 : x
  2. Step 2: Convert to fraction form
    1,975.82/2,727.42 = 1,312.46/x
  3. Step 3: Cross multiply
    1,975.82x = 2,727.42 × 1,312.46
  4. Step 4: Simplify right side
    1,975.82x = 3,579,629.65
  5. Step 5: Solve for x
    x = 3,579,629.65/1,975.82
  6. Step 6: Final answer
    x = 1,811.72

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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.