Home / 1,721.22-2,559.74-1,666.54

Finding the Fourth Proportional to 1,721.22, 2,559.74 and 1,666.54

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Solution

The fourth proportional to 1,721.22, 2,559.74 and 1,666.54 is: 2,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.22 : 2,559.74 = 1,666.54 : x
  2. Step 2: Convert to fraction form
    1,721.22/2,559.74 = 1,666.54/x
  3. Step 3: Cross multiply
    1,721.22x = 2,559.74 × 1,666.54
  4. Step 4: Simplify right side
    1,721.22x = 4,265,909.10
  5. Step 5: Solve for x
    x = 4,265,909.10/1,721.22
  6. Step 6: Final answer
    x = 2,478.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.