Home / 7,106.05-9,802.64-4,120.79

Finding the Fourth Proportional to 7,106.05, 9,802.64 and 4,120.79

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Solution

The fourth proportional to 7,106.05, 9,802.64 and 4,120.79 is: 5,684.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,106.05 : 9,802.64 = 4,120.79 : x
  2. Step 2: Convert to fraction form
    7,106.05/9,802.64 = 4,120.79/x
  3. Step 3: Cross multiply
    7,106.05x = 9,802.64 × 4,120.79
  4. Step 4: Simplify right side
    7,106.05x = 40,394,614.13
  5. Step 5: Solve for x
    x = 40,394,614.13/7,106.05
  6. Step 6: Final answer
    x = 5,684.54

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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.