Home / 1,975.51-2,725.36-1,386.43

Finding the Fourth Proportional to 1,975.51, 2,725.36 and 1,386.43

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Solution

The fourth proportional to 1,975.51, 2,725.36 and 1,386.43 is: 1,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.51 : 2,725.36 = 1,386.43 : x
  2. Step 2: Convert to fraction form
    1,975.51/2,725.36 = 1,386.43/x
  3. Step 3: Cross multiply
    1,975.51x = 2,725.36 × 1,386.43
  4. Step 4: Simplify right side
    1,975.51x = 3,778,520.86
  5. Step 5: Solve for x
    x = 3,778,520.86/1,975.51
  6. Step 6: Final answer
    x = 1,912.68

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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.