Home / 3,317.86-4,578.69-1,920.34

Finding the Fourth Proportional to 3,317.86, 4,578.69 and 1,920.34

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Solution

The fourth proportional to 3,317.86, 4,578.69 and 1,920.34 is: 2,650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.86 : 4,578.69 = 1,920.34 : x
  2. Step 2: Convert to fraction form
    3,317.86/4,578.69 = 1,920.34/x
  3. Step 3: Cross multiply
    3,317.86x = 4,578.69 × 1,920.34
  4. Step 4: Simplify right side
    3,317.86x = 8,792,641.55
  5. Step 5: Solve for x
    x = 8,792,641.55/3,317.86
  6. Step 6: Final answer
    x = 2,650.09

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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.