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Finding the Fourth Proportional to 1,969.96, 2,939.69 and 1,751.80

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Solution

The fourth proportional to 1,969.96, 2,939.69 and 1,751.80 is: 2,614.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.96 : 2,939.69 = 1,751.80 : x
  2. Step 2: Convert to fraction form
    1,969.96/2,939.69 = 1,751.80/x
  3. Step 3: Cross multiply
    1,969.96x = 2,939.69 × 1,751.80
  4. Step 4: Simplify right side
    1,969.96x = 5,149,748.94
  5. Step 5: Solve for x
    x = 5,149,748.94/1,969.96
  6. Step 6: Final answer
    x = 2,614.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.