Home / 6,921.12-9,561.55-4,536.75

Finding the Fourth Proportional to 6,921.12, 9,561.55 and 4,536.75

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Solution

The fourth proportional to 6,921.12, 9,561.55 and 4,536.75 is: 6,267.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.12 : 9,561.55 = 4,536.75 : x
  2. Step 2: Convert to fraction form
    6,921.12/9,561.55 = 4,536.75/x
  3. Step 3: Cross multiply
    6,921.12x = 9,561.55 × 4,536.75
  4. Step 4: Simplify right side
    6,921.12x = 43,378,361.96
  5. Step 5: Solve for x
    x = 43,378,361.96/6,921.12
  6. Step 6: Final answer
    x = 6,267.54

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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.