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Finding the Fourth Proportional to 3,779.63, 5,668.42 and 2,390.88

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Solution

The fourth proportional to 3,779.63, 5,668.42 and 2,390.88 is: 3,585.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.63 : 5,668.42 = 2,390.88 : x
  2. Step 2: Convert to fraction form
    3,779.63/5,668.42 = 2,390.88/x
  3. Step 3: Cross multiply
    3,779.63x = 5,668.42 × 2,390.88
  4. Step 4: Simplify right side
    3,779.63x = 13,552,512.01
  5. Step 5: Solve for x
    x = 13,552,512.01/3,779.63
  6. Step 6: Final answer
    x = 3,585.67

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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.