Home / 2,997.85-4,136.93-1,879.39

Finding the Fourth Proportional to 2,997.85, 4,136.93 and 1,879.39

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Solution

The fourth proportional to 2,997.85, 4,136.93 and 1,879.39 is: 2,593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.85 : 4,136.93 = 1,879.39 : x
  2. Step 2: Convert to fraction form
    2,997.85/4,136.93 = 1,879.39/x
  3. Step 3: Cross multiply
    2,997.85x = 4,136.93 × 1,879.39
  4. Step 4: Simplify right side
    2,997.85x = 7,774,904.87
  5. Step 5: Solve for x
    x = 7,774,904.87/2,997.85
  6. Step 6: Final answer
    x = 2,593.49

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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.