Home / 7,140.23-9,853.71-3,996.41

Finding the Fourth Proportional to 7,140.23, 9,853.71 and 3,996.41

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Solution

The fourth proportional to 7,140.23, 9,853.71 and 3,996.41 is: 5,515.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.23 : 9,853.71 = 3,996.41 : x
  2. Step 2: Convert to fraction form
    7,140.23/9,853.71 = 3,996.41/x
  3. Step 3: Cross multiply
    7,140.23x = 9,853.71 × 3,996.41
  4. Step 4: Simplify right side
    7,140.23x = 39,379,489.82
  5. Step 5: Solve for x
    x = 39,379,489.82/7,140.23
  6. Step 6: Final answer
    x = 5,515.16

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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.