Home / 2,148.09-3,222.75-1,052.78

Finding the Fourth Proportional to 2,148.09, 3,222.75 and 1,052.78

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Solution

The fourth proportional to 2,148.09, 3,222.75 and 1,052.78 is: 1,579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.09 : 3,222.75 = 1,052.78 : x
  2. Step 2: Convert to fraction form
    2,148.09/3,222.75 = 1,052.78/x
  3. Step 3: Cross multiply
    2,148.09x = 3,222.75 × 1,052.78
  4. Step 4: Simplify right side
    2,148.09x = 3,392,830.63
  5. Step 5: Solve for x
    x = 3,392,830.63/2,148.09
  6. Step 6: Final answer
    x = 1,579.46

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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.