Home / 7,106.60-9,806.96-3,920.19

Finding the Fourth Proportional to 7,106.60, 9,806.96 and 3,920.19

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Solution

The fourth proportional to 7,106.60, 9,806.96 and 3,920.19 is: 5,409.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.60 : 9,806.96 = 3,920.19 : x
  2. Step 2: Convert to fraction form
    7,106.60/9,806.96 = 3,920.19/x
  3. Step 3: Cross multiply
    7,106.60x = 9,806.96 × 3,920.19
  4. Step 4: Simplify right side
    7,106.60x = 38,445,097.49
  5. Step 5: Solve for x
    x = 38,445,097.49/7,106.60
  6. Step 6: Final answer
    x = 5,409.78

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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.