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Finding the Fourth Proportional to 2,735.07, 4,103.15 and 980.21

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Solution

The fourth proportional to 2,735.07, 4,103.15 and 980.21 is: 1,470.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,735.07 : 4,103.15 = 980.21 : x
  2. Step 2: Convert to fraction form
    2,735.07/4,103.15 = 980.21/x
  3. Step 3: Cross multiply
    2,735.07x = 4,103.15 × 980.21
  4. Step 4: Simplify right side
    2,735.07x = 4,021,923.24
  5. Step 5: Solve for x
    x = 4,021,923.24/2,735.07
  6. Step 6: Final answer
    x = 1,470.50

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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.