Home / 3,421.63-4,721.99-1,929.52

Finding the Fourth Proportional to 3,421.63, 4,721.99 and 1,929.52

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Solution

The fourth proportional to 3,421.63, 4,721.99 and 1,929.52 is: 2,662.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.63 : 4,721.99 = 1,929.52 : x
  2. Step 2: Convert to fraction form
    3,421.63/4,721.99 = 1,929.52/x
  3. Step 3: Cross multiply
    3,421.63x = 4,721.99 × 1,929.52
  4. Step 4: Simplify right side
    3,421.63x = 9,111,174.14
  5. Step 5: Solve for x
    x = 9,111,174.14/3,421.63
  6. Step 6: Final answer
    x = 2,662.82

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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.