Home / 2,148.75-3,239.73-1,721.07

Finding the Fourth Proportional to 2,148.75, 3,239.73 and 1,721.07

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Solution

The fourth proportional to 2,148.75, 3,239.73 and 1,721.07 is: 2,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.75 : 3,239.73 = 1,721.07 : x
  2. Step 2: Convert to fraction form
    2,148.75/3,239.73 = 1,721.07/x
  3. Step 3: Cross multiply
    2,148.75x = 3,239.73 × 1,721.07
  4. Step 4: Simplify right side
    2,148.75x = 5,575,802.11
  5. Step 5: Solve for x
    x = 5,575,802.11/2,148.75
  6. Step 6: Final answer
    x = 2,594.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.