Home / 7,108.16-9,809.32-3,964.54

Finding the Fourth Proportional to 7,108.16, 9,809.32 and 3,964.54

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Solution

The fourth proportional to 7,108.16, 9,809.32 and 3,964.54 is: 5,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.16 : 9,809.32 = 3,964.54 : x
  2. Step 2: Convert to fraction form
    7,108.16/9,809.32 = 3,964.54/x
  3. Step 3: Cross multiply
    7,108.16x = 9,809.32 × 3,964.54
  4. Step 4: Simplify right side
    7,108.16x = 38,889,441.51
  5. Step 5: Solve for x
    x = 38,889,441.51/7,108.16
  6. Step 6: Final answer
    x = 5,471.10

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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.