Home / 3,421.46-4,721.47-1,929.52

Finding the Fourth Proportional to 3,421.46, 4,721.47 and 1,929.52

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Solution

The fourth proportional to 3,421.46, 4,721.47 and 1,929.52 is: 2,662.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.46 : 4,721.47 = 1,929.52 : x
  2. Step 2: Convert to fraction form
    3,421.46/4,721.47 = 1,929.52/x
  3. Step 3: Cross multiply
    3,421.46x = 4,721.47 × 1,929.52
  4. Step 4: Simplify right side
    3,421.46x = 9,110,145.31
  5. Step 5: Solve for x
    x = 9,110,145.31/3,421.46
  6. Step 6: Final answer
    x = 2,662.65

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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.