Home / 3,421.39-4,721.16-1,929.54

Finding the Fourth Proportional to 3,421.39, 4,721.16 and 1,929.54

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Solution

The fourth proportional to 3,421.39, 4,721.16 and 1,929.54 is: 2,662.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.39 : 4,721.16 = 1,929.54 : x
  2. Step 2: Convert to fraction form
    3,421.39/4,721.16 = 1,929.54/x
  3. Step 3: Cross multiply
    3,421.39x = 4,721.16 × 1,929.54
  4. Step 4: Simplify right side
    3,421.39x = 9,109,667.07
  5. Step 5: Solve for x
    x = 9,109,667.07/3,421.39
  6. Step 6: Final answer
    x = 2,662.56

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1.5x scale

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.