Home / 7,140.26-9,853.57-3,996.45

Finding the Fourth Proportional to 7,140.26, 9,853.57 and 3,996.45

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Solution

The fourth proportional to 7,140.26, 9,853.57 and 3,996.45 is: 5,515.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.26 : 9,853.57 = 3,996.45 : x
  2. Step 2: Convert to fraction form
    7,140.26/9,853.57 = 3,996.45/x
  3. Step 3: Cross multiply
    7,140.26x = 9,853.57 × 3,996.45
  4. Step 4: Simplify right side
    7,140.26x = 39,379,299.83
  5. Step 5: Solve for x
    x = 39,379,299.83/7,140.26
  6. Step 6: Final answer
    x = 5,515.11

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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.