Home / 7,190.39-9,920.80-4,206.96

Finding the Fourth Proportional to 7,190.39, 9,920.80 and 4,206.96

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Solution

The fourth proportional to 7,190.39, 9,920.80 and 4,206.96 is: 5,804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.39 : 9,920.80 = 4,206.96 : x
  2. Step 2: Convert to fraction form
    7,190.39/9,920.80 = 4,206.96/x
  3. Step 3: Cross multiply
    7,190.39x = 9,920.80 × 4,206.96
  4. Step 4: Simplify right side
    7,190.39x = 41,736,348.65
  5. Step 5: Solve for x
    x = 41,736,348.65/7,190.39
  6. Step 6: Final answer
    x = 5,804.46

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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.