Home / 7,143.24-9,858.88-4,160.85

Finding the Fourth Proportional to 7,143.24, 9,858.88 and 4,160.85

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Solution

The fourth proportional to 7,143.24, 9,858.88 and 4,160.85 is: 5,742.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.24 : 9,858.88 = 4,160.85 : x
  2. Step 2: Convert to fraction form
    7,143.24/9,858.88 = 4,160.85/x
  3. Step 3: Cross multiply
    7,143.24x = 9,858.88 × 4,160.85
  4. Step 4: Simplify right side
    7,143.24x = 41,021,273.48
  5. Step 5: Solve for x
    x = 41,021,273.48/7,143.24
  6. Step 6: Final answer
    x = 5,742.67

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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.