Home / 8,185.11-11,300.75-6,389.50

Finding the Fourth Proportional to 8,185.11, 11,300.75 and 6,389.50

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Solution

The fourth proportional to 8,185.11, 11,300.75 and 6,389.50 is: 8,821.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.11 : 11,300.75 = 6,389.50 : x
  2. Step 2: Convert to fraction form
    8,185.11/11,300.75 = 6,389.50/x
  3. Step 3: Cross multiply
    8,185.11x = 11,300.75 × 6,389.50
  4. Step 4: Simplify right side
    8,185.11x = 72,206,106.36
  5. Step 5: Solve for x
    x = 72,206,106.36/8,185.11
  6. Step 6: Final answer
    x = 8,821.64

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Double scale
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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.