Home / 3,421.88-4,722.26-1,929.51

Finding the Fourth Proportional to 3,421.88, 4,722.26 and 1,929.51

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Solution

The fourth proportional to 3,421.88, 4,722.26 and 1,929.51 is: 2,662.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.88 : 4,722.26 = 1,929.51 : x
  2. Step 2: Convert to fraction form
    3,421.88/4,722.26 = 1,929.51/x
  3. Step 3: Cross multiply
    3,421.88x = 4,722.26 × 1,929.51
  4. Step 4: Simplify right side
    3,421.88x = 9,111,627.77
  5. Step 5: Solve for x
    x = 9,111,627.77/3,421.88
  6. Step 6: Final answer
    x = 2,662.76

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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.