Home / 7,110.85-9,812.94-3,880.69

Finding the Fourth Proportional to 7,110.85, 9,812.94 and 3,880.69

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Solution

The fourth proportional to 7,110.85, 9,812.94 and 3,880.69 is: 5,355.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.85 : 9,812.94 = 3,880.69 : x
  2. Step 2: Convert to fraction form
    7,110.85/9,812.94 = 3,880.69/x
  3. Step 3: Cross multiply
    7,110.85x = 9,812.94 × 3,880.69
  4. Step 4: Simplify right side
    7,110.85x = 38,080,978.13
  5. Step 5: Solve for x
    x = 38,080,978.13/7,110.85
  6. Step 6: Final answer
    x = 5,355.33

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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.