Home / 6,390.36-8,816.45-3,736.80

Finding the Fourth Proportional to 6,390.36, 8,816.45 and 3,736.80

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Solution

The fourth proportional to 6,390.36, 8,816.45 and 3,736.80 is: 5,155.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.36 : 8,816.45 = 3,736.80 : x
  2. Step 2: Convert to fraction form
    6,390.36/8,816.45 = 3,736.80/x
  3. Step 3: Cross multiply
    6,390.36x = 8,816.45 × 3,736.80
  4. Step 4: Simplify right side
    6,390.36x = 32,945,291.68
  5. Step 5: Solve for x
    x = 32,945,291.68/6,390.36
  6. Step 6: Final answer
    x = 5,155.47

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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.