Home / 4,189.05-5,780.91-2,420.67

Finding the Fourth Proportional to 4,189.05, 5,780.91 and 2,420.67

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Solution

The fourth proportional to 4,189.05, 5,780.91 and 2,420.67 is: 3,340.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.05 : 5,780.91 = 2,420.67 : x
  2. Step 2: Convert to fraction form
    4,189.05/5,780.91 = 2,420.67/x
  3. Step 3: Cross multiply
    4,189.05x = 5,780.91 × 2,420.67
  4. Step 4: Simplify right side
    4,189.05x = 13,993,675.41
  5. Step 5: Solve for x
    x = 13,993,675.41/4,189.05
  6. Step 6: Final answer
    x = 3,340.54

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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.