Home / 7,091.87-9,786.81-3,948.06

Finding the Fourth Proportional to 7,091.87, 9,786.81 and 3,948.06

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Solution

The fourth proportional to 7,091.87, 9,786.81 and 3,948.06 is: 5,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.87 : 9,786.81 = 3,948.06 : x
  2. Step 2: Convert to fraction form
    7,091.87/9,786.81 = 3,948.06/x
  3. Step 3: Cross multiply
    7,091.87x = 9,786.81 × 3,948.06
  4. Step 4: Simplify right side
    7,091.87x = 38,638,887.34
  5. Step 5: Solve for x
    x = 38,638,887.34/7,091.87
  6. Step 6: Final answer
    x = 5,448.34

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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.