Home / 5,180.98-7,771.39-1,285.39

Finding the Fourth Proportional to 5,180.98, 7,771.39 and 1,285.39

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Solution

The fourth proportional to 5,180.98, 7,771.39 and 1,285.39 is: 1,928.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.98 : 7,771.39 = 1,285.39 : x
  2. Step 2: Convert to fraction form
    5,180.98/7,771.39 = 1,285.39/x
  3. Step 3: Cross multiply
    5,180.98x = 7,771.39 × 1,285.39
  4. Step 4: Simplify right side
    5,180.98x = 9,989,237.01
  5. Step 5: Solve for x
    x = 9,989,237.01/5,180.98
  6. Step 6: Final answer
    x = 1,928.06

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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.