Home / 8,210.21-12,309.69-2,945.11

Finding the Fourth Proportional to 8,210.21, 12,309.69 and 2,945.11

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Solution

The fourth proportional to 8,210.21, 12,309.69 and 2,945.11 is: 4,415.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.21 : 12,309.69 = 2,945.11 : x
  2. Step 2: Convert to fraction form
    8,210.21/12,309.69 = 2,945.11/x
  3. Step 3: Cross multiply
    8,210.21x = 12,309.69 × 2,945.11
  4. Step 4: Simplify right side
    8,210.21x = 36,253,329.57
  5. Step 5: Solve for x
    x = 36,253,329.57/8,210.21
  6. Step 6: Final answer
    x = 4,415.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.