Home / 9,189.12-13,783.68-2,949.78

Finding the Fourth Proportional to 9,189.12, 13,783.68 and 2,949.78

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Solution

The fourth proportional to 9,189.12, 13,783.68 and 2,949.78 is: 4,424.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.12 : 13,783.68 = 2,949.78 : x
  2. Step 2: Convert to fraction form
    9,189.12/13,783.68 = 2,949.78/x
  3. Step 3: Cross multiply
    9,189.12x = 13,783.68 × 2,949.78
  4. Step 4: Simplify right side
    9,189.12x = 40,658,823.59
  5. Step 5: Solve for x
    x = 40,658,823.59/9,189.12
  6. Step 6: Final answer
    x = 4,424.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.