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Finding the Fourth Proportional to 8,395.32, 11,559.06 and 6,399.48

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Solution

The fourth proportional to 8,395.32, 11,559.06 and 6,399.48 is: 8,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,395.32 : 11,559.06 = 6,399.48 : x
  2. Step 2: Convert to fraction form
    8,395.32/11,559.06 = 6,399.48/x
  3. Step 3: Cross multiply
    8,395.32x = 11,559.06 × 6,399.48
  4. Step 4: Simplify right side
    8,395.32x = 73,971,973.29
  5. Step 5: Solve for x
    x = 73,971,973.29/8,395.32
  6. Step 6: Final answer
    x = 8,811.10

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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.