Home / 7,018.21-9,680.80-4,183.68

Finding the Fourth Proportional to 7,018.21, 9,680.80 and 4,183.68

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Solution

The fourth proportional to 7,018.21, 9,680.80 and 4,183.68 is: 5,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.21 : 9,680.80 = 4,183.68 : x
  2. Step 2: Convert to fraction form
    7,018.21/9,680.80 = 4,183.68/x
  3. Step 3: Cross multiply
    7,018.21x = 9,680.80 × 4,183.68
  4. Step 4: Simplify right side
    7,018.21x = 40,501,369.34
  5. Step 5: Solve for x
    x = 40,501,369.34/7,018.21
  6. Step 6: Final answer
    x = 5,770.90

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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.