Home / 7,780.06-10,736.12-4,243.16

Finding the Fourth Proportional to 7,780.06, 10,736.12 and 4,243.16

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Solution

The fourth proportional to 7,780.06, 10,736.12 and 4,243.16 is: 5,855.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.06 : 10,736.12 = 4,243.16 : x
  2. Step 2: Convert to fraction form
    7,780.06/10,736.12 = 4,243.16/x
  3. Step 3: Cross multiply
    7,780.06x = 10,736.12 × 4,243.16
  4. Step 4: Simplify right side
    7,780.06x = 45,555,074.94
  5. Step 5: Solve for x
    x = 45,555,074.94/7,780.06
  6. Step 6: Final answer
    x = 5,855.36

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Half 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.