Home / 7,769.21-11,652.13-2,221.05

Finding the Fourth Proportional to 7,769.21, 11,652.13 and 2,221.05

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Solution

The fourth proportional to 7,769.21, 11,652.13 and 2,221.05 is: 3,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.21 : 11,652.13 = 2,221.05 : x
  2. Step 2: Convert to fraction form
    7,769.21/11,652.13 = 2,221.05/x
  3. Step 3: Cross multiply
    7,769.21x = 11,652.13 × 2,221.05
  4. Step 4: Simplify right side
    7,769.21x = 25,880,009.81
  5. Step 5: Solve for x
    x = 25,880,009.81/7,769.21
  6. Step 6: Final answer
    x = 3,331.10

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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.