Home / 7,109.80-10,664.70-2,179.46

Finding the Fourth Proportional to 7,109.80, 10,664.70 and 2,179.46

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Solution

The fourth proportional to 7,109.80, 10,664.70 and 2,179.46 is: 3,269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.80 : 10,664.70 = 2,179.46 : x
  2. Step 2: Convert to fraction form
    7,109.80/10,664.70 = 2,179.46/x
  3. Step 3: Cross multiply
    7,109.80x = 10,664.70 × 2,179.46
  4. Step 4: Simplify right side
    7,109.80x = 23,243,287.06
  5. Step 5: Solve for x
    x = 23,243,287.06/7,109.80
  6. Step 6: Final answer
    x = 3,269.19

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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.