Home / 3,421.53-4,721.64-1,929.60

Finding the Fourth Proportional to 3,421.53, 4,721.64 and 1,929.60

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Solution

The fourth proportional to 3,421.53, 4,721.64 and 1,929.60 is: 2,662.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.53 : 4,721.64 = 1,929.60 : x
  2. Step 2: Convert to fraction form
    3,421.53/4,721.64 = 1,929.60/x
  3. Step 3: Cross multiply
    3,421.53x = 4,721.64 × 1,929.60
  4. Step 4: Simplify right side
    3,421.53x = 9,110,876.54
  5. Step 5: Solve for x
    x = 9,110,876.54/3,421.53
  6. Step 6: Final answer
    x = 2,662.81

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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.