Home / 7,064.22-9,749.79-3,921.42

Finding the Fourth Proportional to 7,064.22, 9,749.79 and 3,921.42

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Solution

The fourth proportional to 7,064.22, 9,749.79 and 3,921.42 is: 5,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,064.22 : 9,749.79 = 3,921.42 : x
  2. Step 2: Convert to fraction form
    7,064.22/9,749.79 = 3,921.42/x
  3. Step 3: Cross multiply
    7,064.22x = 9,749.79 × 3,921.42
  4. Step 4: Simplify right side
    7,064.22x = 38,233,021.50
  5. Step 5: Solve for x
    x = 38,233,021.50/7,064.22
  6. Step 6: Final answer
    x = 5,412.21

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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.