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Finding the Fourth Proportional to 1,969.68, 2,954.59 and 670.98

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Solution

The fourth proportional to 1,969.68, 2,954.59 and 670.98 is: 1,006.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.68 : 2,954.59 = 670.98 : x
  2. Step 2: Convert to fraction form
    1,969.68/2,954.59 = 670.98/x
  3. Step 3: Cross multiply
    1,969.68x = 2,954.59 × 670.98
  4. Step 4: Simplify right side
    1,969.68x = 1,982,470.80
  5. Step 5: Solve for x
    x = 1,982,470.80/1,969.68
  6. Step 6: Final answer
    x = 1,006.49

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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.