Home / 4,140.78-6,211.05-1,020.77

Finding the Fourth Proportional to 4,140.78, 6,211.05 and 1,020.77

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Solution

The fourth proportional to 4,140.78, 6,211.05 and 1,020.77 is: 1,531.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.78 : 6,211.05 = 1,020.77 : x
  2. Step 2: Convert to fraction form
    4,140.78/6,211.05 = 1,020.77/x
  3. Step 3: Cross multiply
    4,140.78x = 6,211.05 × 1,020.77
  4. Step 4: Simplify right side
    4,140.78x = 6,340,022.45
  5. Step 5: Solve for x
    x = 6,340,022.45/4,140.78
  6. Step 6: Final answer
    x = 1,531.12

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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.