Home / 7,106.63-9,806.79-3,920.48

Finding the Fourth Proportional to 7,106.63, 9,806.79 and 3,920.48

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Solution

The fourth proportional to 7,106.63, 9,806.79 and 3,920.48 is: 5,410.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.63 : 9,806.79 = 3,920.48 : x
  2. Step 2: Convert to fraction form
    7,106.63/9,806.79 = 3,920.48/x
  3. Step 3: Cross multiply
    7,106.63x = 9,806.79 × 3,920.48
  4. Step 4: Simplify right side
    7,106.63x = 38,447,324.06
  5. Step 5: Solve for x
    x = 38,447,324.06/7,106.63
  6. Step 6: Final answer
    x = 5,410.06

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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.