Home / 7,140.19-9,853.49-3,996.37

Finding the Fourth Proportional to 7,140.19, 9,853.49 and 3,996.37

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Solution

The fourth proportional to 7,140.19, 9,853.49 and 3,996.37 is: 5,515.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.19 : 9,853.49 = 3,996.37 : x
  2. Step 2: Convert to fraction form
    7,140.19/9,853.49 = 3,996.37/x
  3. Step 3: Cross multiply
    7,140.19x = 9,853.49 × 3,996.37
  4. Step 4: Simplify right side
    7,140.19x = 39,378,171.85
  5. Step 5: Solve for x
    x = 39,378,171.85/7,140.19
  6. Step 6: Final answer
    x = 5,515.00

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Half scale
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Double scale
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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.