Home / 7,781.06-11,671.70-2,586.94

Finding the Fourth Proportional to 7,781.06, 11,671.70 and 2,586.94

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Solution

The fourth proportional to 7,781.06, 11,671.70 and 2,586.94 is: 3,880.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.06 : 11,671.70 = 2,586.94 : x
  2. Step 2: Convert to fraction form
    7,781.06/11,671.70 = 2,586.94/x
  3. Step 3: Cross multiply
    7,781.06x = 11,671.70 × 2,586.94
  4. Step 4: Simplify right side
    7,781.06x = 30,193,945.48
  5. Step 5: Solve for x
    x = 30,193,945.48/7,781.06
  6. Step 6: Final answer
    x = 3,880.44

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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.