Home / 6,399.36-8,821.44-4,999.68

Finding the Fourth Proportional to 6,399.36, 8,821.44 and 4,999.68

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Solution

The fourth proportional to 6,399.36, 8,821.44 and 4,999.68 is: 6,892.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.36 : 8,821.44 = 4,999.68 : x
  2. Step 2: Convert to fraction form
    6,399.36/8,821.44 = 4,999.68/x
  3. Step 3: Cross multiply
    6,399.36x = 8,821.44 × 4,999.68
  4. Step 4: Simplify right side
    6,399.36x = 44,104,377.14
  5. Step 5: Solve for x
    x = 44,104,377.14/6,399.36
  6. Step 6: Final answer
    x = 6,892.00

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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.