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Finding the Fourth Proportional to 4,309.56, 6,467.56 and 2,919.60

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Solution

The fourth proportional to 4,309.56, 6,467.56 and 2,919.60 is: 4,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.56 : 6,467.56 = 2,919.60 : x
  2. Step 2: Convert to fraction form
    4,309.56/6,467.56 = 2,919.60/x
  3. Step 3: Cross multiply
    4,309.56x = 6,467.56 × 2,919.60
  4. Step 4: Simplify right side
    4,309.56x = 18,882,688.18
  5. Step 5: Solve for x
    x = 18,882,688.18/4,309.56
  6. Step 6: Final answer
    x = 4,381.58

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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.