Home / 2,124.92-3,186.80-1,343.75

Finding the Fourth Proportional to 2,124.92, 3,186.80 and 1,343.75

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Solution

The fourth proportional to 2,124.92, 3,186.80 and 1,343.75 is: 2,015.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.92 : 3,186.80 = 1,343.75 : x
  2. Step 2: Convert to fraction form
    2,124.92/3,186.80 = 1,343.75/x
  3. Step 3: Cross multiply
    2,124.92x = 3,186.80 × 1,343.75
  4. Step 4: Simplify right side
    2,124.92x = 4,282,244.89
  5. Step 5: Solve for x
    x = 4,282,244.89/2,124.92
  6. Step 6: Final answer
    x = 2,015.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.