Home / 3,976.89-5,486.99-2,486.32

Finding the Fourth Proportional to 3,976.89, 5,486.99 and 2,486.32

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Solution

The fourth proportional to 3,976.89, 5,486.99 and 2,486.32 is: 3,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.89 : 5,486.99 = 2,486.32 : x
  2. Step 2: Convert to fraction form
    3,976.89/5,486.99 = 2,486.32/x
  3. Step 3: Cross multiply
    3,976.89x = 5,486.99 × 2,486.32
  4. Step 4: Simplify right side
    3,976.89x = 13,642,412.98
  5. Step 5: Solve for x
    x = 13,642,412.98/3,976.89
  6. Step 6: Final answer
    x = 3,430.42

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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.