Home / 7,120.27-9,825.21-4,135.52

Finding the Fourth Proportional to 7,120.27, 9,825.21 and 4,135.52

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Solution

The fourth proportional to 7,120.27, 9,825.21 and 4,135.52 is: 5,706.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.27 : 9,825.21 = 4,135.52 : x
  2. Step 2: Convert to fraction form
    7,120.27/9,825.21 = 4,135.52/x
  3. Step 3: Cross multiply
    7,120.27x = 9,825.21 × 4,135.52
  4. Step 4: Simplify right side
    7,120.27x = 40,632,352.46
  5. Step 5: Solve for x
    x = 40,632,352.46/7,120.27
  6. Step 6: Final answer
    x = 5,706.57

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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.