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Finding the Fourth Proportional to 2,170.02, 3,255.32 and 708.69

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Solution

The fourth proportional to 2,170.02, 3,255.32 and 708.69 is: 1,063.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.02 : 3,255.32 = 708.69 : x
  2. Step 2: Convert to fraction form
    2,170.02/3,255.32 = 708.69/x
  3. Step 3: Cross multiply
    2,170.02x = 3,255.32 × 708.69
  4. Step 4: Simplify right side
    2,170.02x = 2,307,014.50
  5. Step 5: Solve for x
    x = 2,307,014.50/2,170.02
  6. Step 6: Final answer
    x = 1,063.13

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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.