Home / 4,140.54-6,211.89-1,218.75

Finding the Fourth Proportional to 4,140.54, 6,211.89 and 1,218.75

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Solution

The fourth proportional to 4,140.54, 6,211.89 and 1,218.75 is: 1,828.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.54 : 6,211.89 = 1,218.75 : x
  2. Step 2: Convert to fraction form
    4,140.54/6,211.89 = 1,218.75/x
  3. Step 3: Cross multiply
    4,140.54x = 6,211.89 × 1,218.75
  4. Step 4: Simplify right side
    4,140.54x = 7,570,740.94
  5. Step 5: Solve for x
    x = 7,570,740.94/4,140.54
  6. Step 6: Final answer
    x = 1,828.44

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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.