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Finding the Fourth Proportional to 1,969.49, 2,930.99 and 1,903.87

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Solution

The fourth proportional to 1,969.49, 2,930.99 and 1,903.87 is: 2,833.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.49 : 2,930.99 = 1,903.87 : x
  2. Step 2: Convert to fraction form
    1,969.49/2,930.99 = 1,903.87/x
  3. Step 3: Cross multiply
    1,969.49x = 2,930.99 × 1,903.87
  4. Step 4: Simplify right side
    1,969.49x = 5,580,214.41
  5. Step 5: Solve for x
    x = 5,580,214.41/1,969.49
  6. Step 6: Final answer
    x = 2,833.33

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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.