Home / 7,108.23-9,808.91-3,921.56

Finding the Fourth Proportional to 7,108.23, 9,808.91 and 3,921.56

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Solution

The fourth proportional to 7,108.23, 9,808.91 and 3,921.56 is: 5,411.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.23 : 9,808.91 = 3,921.56 : x
  2. Step 2: Convert to fraction form
    7,108.23/9,808.91 = 3,921.56/x
  3. Step 3: Cross multiply
    7,108.23x = 9,808.91 × 3,921.56
  4. Step 4: Simplify right side
    7,108.23x = 38,466,229.10
  5. Step 5: Solve for x
    x = 38,466,229.10/7,108.23
  6. Step 6: Final answer
    x = 5,411.51

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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.