Home / 8,601.72-11,872.20-5,457.28

Finding the Fourth Proportional to 8,601.72, 11,872.20 and 5,457.28

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Solution

The fourth proportional to 8,601.72, 11,872.20 and 5,457.28 is: 7,532.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.72 : 11,872.20 = 5,457.28 : x
  2. Step 2: Convert to fraction form
    8,601.72/11,872.20 = 5,457.28/x
  3. Step 3: Cross multiply
    8,601.72x = 11,872.20 × 5,457.28
  4. Step 4: Simplify right side
    8,601.72x = 64,789,919.62
  5. Step 5: Solve for x
    x = 64,789,919.62/8,601.72
  6. Step 6: Final answer
    x = 7,532.21

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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.