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Finding the Fourth Proportional to 8,453.81, 12,682.79 and 2,907.24

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Solution

The fourth proportional to 8,453.81, 12,682.79 and 2,907.24 is: 4,361.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.81 : 12,682.79 = 2,907.24 : x
  2. Step 2: Convert to fraction form
    8,453.81/12,682.79 = 2,907.24/x
  3. Step 3: Cross multiply
    8,453.81x = 12,682.79 × 2,907.24
  4. Step 4: Simplify right side
    8,453.81x = 36,871,914.40
  5. Step 5: Solve for x
    x = 36,871,914.40/8,453.81
  6. Step 6: Final answer
    x = 4,361.57

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Double scale
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Similar ratio
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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.