Home / 3,421.27-4,720.99-1,929.41

Finding the Fourth Proportional to 3,421.27, 4,720.99 and 1,929.41

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Solution

The fourth proportional to 3,421.27, 4,720.99 and 1,929.41 is: 2,662.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.27 : 4,720.99 = 1,929.41 : x
  2. Step 2: Convert to fraction form
    3,421.27/4,720.99 = 1,929.41/x
  3. Step 3: Cross multiply
    3,421.27x = 4,720.99 × 1,929.41
  4. Step 4: Simplify right side
    3,421.27x = 9,108,715.67
  5. Step 5: Solve for x
    x = 9,108,715.67/3,421.27
  6. Step 6: Final answer
    x = 2,662.38

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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.