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Finding the Fourth Proportional to 3,480.64, 5,217.36 and 1,748.32

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Solution

The fourth proportional to 3,480.64, 5,217.36 and 1,748.32 is: 2,620.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.64 : 5,217.36 = 1,748.32 : x
  2. Step 2: Convert to fraction form
    3,480.64/5,217.36 = 1,748.32/x
  3. Step 3: Cross multiply
    3,480.64x = 5,217.36 × 1,748.32
  4. Step 4: Simplify right side
    3,480.64x = 9,121,614.84
  5. Step 5: Solve for x
    x = 9,121,614.84/3,480.64
  6. Step 6: Final answer
    x = 2,620.67

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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.