Home / 8,128.21-11,226.16-5,471.01

Finding the Fourth Proportional to 8,128.21, 11,226.16 and 5,471.01

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Solution

The fourth proportional to 8,128.21, 11,226.16 and 5,471.01 is: 7,556.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.21 : 11,226.16 = 5,471.01 : x
  2. Step 2: Convert to fraction form
    8,128.21/11,226.16 = 5,471.01/x
  3. Step 3: Cross multiply
    8,128.21x = 11,226.16 × 5,471.01
  4. Step 4: Simplify right side
    8,128.21x = 61,418,433.62
  5. Step 5: Solve for x
    x = 61,418,433.62/8,128.21
  6. Step 6: Final answer
    x = 7,556.21

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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.