Home / 7,180.60-10,771.50-1,986.46

Finding the Fourth Proportional to 7,180.60, 10,771.50 and 1,986.46

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Solution

The fourth proportional to 7,180.60, 10,771.50 and 1,986.46 is: 2,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.60 : 10,771.50 = 1,986.46 : x
  2. Step 2: Convert to fraction form
    7,180.60/10,771.50 = 1,986.46/x
  3. Step 3: Cross multiply
    7,180.60x = 10,771.50 × 1,986.46
  4. Step 4: Simplify right side
    7,180.60x = 21,397,153.89
  5. Step 5: Solve for x
    x = 21,397,153.89/7,180.60
  6. Step 6: Final answer
    x = 2,979.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.