Home / 7,139.36-10,707.96-2,208.08

Finding the Fourth Proportional to 7,139.36, 10,707.96 and 2,208.08

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Solution

The fourth proportional to 7,139.36, 10,707.96 and 2,208.08 is: 3,311.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.36 : 10,707.96 = 2,208.08 : x
  2. Step 2: Convert to fraction form
    7,139.36/10,707.96 = 2,208.08/x
  3. Step 3: Cross multiply
    7,139.36x = 10,707.96 × 2,208.08
  4. Step 4: Simplify right side
    7,139.36x = 23,644,032.32
  5. Step 5: Solve for x
    x = 23,644,032.32/7,139.36
  6. Step 6: Final answer
    x = 3,311.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.