Home / 7,065.23-9,749.97-3,921.21

Finding the Fourth Proportional to 7,065.23, 9,749.97 and 3,921.21

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Solution

The fourth proportional to 7,065.23, 9,749.97 and 3,921.21 is: 5,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.23 : 9,749.97 = 3,921.21 : x
  2. Step 2: Convert to fraction form
    7,065.23/9,749.97 = 3,921.21/x
  3. Step 3: Cross multiply
    7,065.23x = 9,749.97 × 3,921.21
  4. Step 4: Simplify right side
    7,065.23x = 38,231,679.86
  5. Step 5: Solve for x
    x = 38,231,679.86/7,065.23
  6. Step 6: Final answer
    x = 5,411.25

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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.