Home / 3,421.28-4,720.91-1,929.26

Finding the Fourth Proportional to 3,421.28, 4,720.91 and 1,929.26

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Solution

The fourth proportional to 3,421.28, 4,720.91 and 1,929.26 is: 2,662.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.28 : 4,720.91 = 1,929.26 : x
  2. Step 2: Convert to fraction form
    3,421.28/4,720.91 = 1,929.26/x
  3. Step 3: Cross multiply
    3,421.28x = 4,720.91 × 1,929.26
  4. Step 4: Simplify right side
    3,421.28x = 9,107,829.58
  5. Step 5: Solve for x
    x = 9,107,829.58/3,421.28
  6. Step 6: Final answer
    x = 2,662.12

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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.