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Finding the Fourth Proportional to 6,376.69, 8,804.07 and 3,990.27

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Solution

The fourth proportional to 6,376.69, 8,804.07 and 3,990.27 is: 5,509.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,376.69 : 8,804.07 = 3,990.27 : x
  2. Step 2: Convert to fraction form
    6,376.69/8,804.07 = 3,990.27/x
  3. Step 3: Cross multiply
    6,376.69x = 8,804.07 × 3,990.27
  4. Step 4: Simplify right side
    6,376.69x = 35,130,616.40
  5. Step 5: Solve for x
    x = 35,130,616.40/6,376.69
  6. Step 6: Final answer
    x = 5,509.22

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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.