Home / 3,478.57-5,214.21-1,628.13

Finding the Fourth Proportional to 3,478.57, 5,214.21 and 1,628.13

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Solution

The fourth proportional to 3,478.57, 5,214.21 and 1,628.13 is: 2,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.57 : 5,214.21 = 1,628.13 : x
  2. Step 2: Convert to fraction form
    3,478.57/5,214.21 = 1,628.13/x
  3. Step 3: Cross multiply
    3,478.57x = 5,214.21 × 1,628.13
  4. Step 4: Simplify right side
    3,478.57x = 8,489,385.66
  5. Step 5: Solve for x
    x = 8,489,385.66/3,478.57
  6. Step 6: Final answer
    x = 2,440.48

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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.