Home / 6,675.12-9,210.24-3,879.12

Finding the Fourth Proportional to 6,675.12, 9,210.24 and 3,879.12

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Solution

The fourth proportional to 6,675.12, 9,210.24 and 3,879.12 is: 5,352.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,675.12 : 9,210.24 = 3,879.12 : x
  2. Step 2: Convert to fraction form
    6,675.12/9,210.24 = 3,879.12/x
  3. Step 3: Cross multiply
    6,675.12x = 9,210.24 × 3,879.12
  4. Step 4: Simplify right side
    6,675.12x = 35,727,626.19
  5. Step 5: Solve for x
    x = 35,727,626.19/6,675.12
  6. Step 6: Final answer
    x = 5,352.36

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Half scale
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Double scale
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Similar ratio
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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.