Home / 2,921.86-4,377.90-2,054.62

Finding the Fourth Proportional to 2,921.86, 4,377.90 and 2,054.62

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Solution

The fourth proportional to 2,921.86, 4,377.90 and 2,054.62 is: 3,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.86 : 4,377.90 = 2,054.62 : x
  2. Step 2: Convert to fraction form
    2,921.86/4,377.90 = 2,054.62/x
  3. Step 3: Cross multiply
    2,921.86x = 4,377.90 × 2,054.62
  4. Step 4: Simplify right side
    2,921.86x = 8,994,920.90
  5. Step 5: Solve for x
    x = 8,994,920.90/2,921.86
  6. Step 6: Final answer
    x = 3,078.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.