Home / 5,085.70-7,018.14-2,961.60

Finding the Fourth Proportional to 5,085.70, 7,018.14 and 2,961.60

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Solution

The fourth proportional to 5,085.70, 7,018.14 and 2,961.60 is: 4,086.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.70 : 7,018.14 = 2,961.60 : x
  2. Step 2: Convert to fraction form
    5,085.70/7,018.14 = 2,961.60/x
  3. Step 3: Cross multiply
    5,085.70x = 7,018.14 × 2,961.60
  4. Step 4: Simplify right side
    5,085.70x = 20,784,923.42
  5. Step 5: Solve for x
    x = 20,784,923.42/5,085.70
  6. Step 6: Final answer
    x = 4,086.93

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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.