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Finding the Fourth Proportional to 6,389.44, 8,816.08 and 3,736.34

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Solution

The fourth proportional to 6,389.44, 8,816.08 and 3,736.34 is: 5,155.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.44 : 8,816.08 = 3,736.34 : x
  2. Step 2: Convert to fraction form
    6,389.44/8,816.08 = 3,736.34/x
  3. Step 3: Cross multiply
    6,389.44x = 8,816.08 × 3,736.34
  4. Step 4: Simplify right side
    6,389.44x = 32,939,818.93
  5. Step 5: Solve for x
    x = 32,939,818.93/6,389.44
  6. Step 6: Final answer
    x = 5,155.36

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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.