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Finding the Fourth Proportional to 1,979.41, 2,968.30 and 746.20

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Solution

The fourth proportional to 1,979.41, 2,968.30 and 746.20 is: 1,118.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.41 : 2,968.30 = 746.20 : x
  2. Step 2: Convert to fraction form
    1,979.41/2,968.30 = 746.20/x
  3. Step 3: Cross multiply
    1,979.41x = 2,968.30 × 746.20
  4. Step 4: Simplify right side
    1,979.41x = 2,214,928.75
  5. Step 5: Solve for x
    x = 2,214,928.75/1,979.41
  6. Step 6: Final answer
    x = 1,118.99

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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.