Home / 8,321.64-11,473.63-5,172.36

Finding the Fourth Proportional to 8,321.64, 11,473.63 and 5,172.36

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Solution

The fourth proportional to 8,321.64, 11,473.63 and 5,172.36 is: 7,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.64 : 11,473.63 = 5,172.36 : x
  2. Step 2: Convert to fraction form
    8,321.64/11,473.63 = 5,172.36/x
  3. Step 3: Cross multiply
    8,321.64x = 11,473.63 × 5,172.36
  4. Step 4: Simplify right side
    8,321.64x = 59,345,744.87
  5. Step 5: Solve for x
    x = 59,345,744.87/8,321.64
  6. Step 6: Final answer
    x = 7,131.50

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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.