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Finding the Fourth Proportional to 2,469.12, 3,703.68 and 989.02

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Solution

The fourth proportional to 2,469.12, 3,703.68 and 989.02 is: 1,483.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,469.12 : 3,703.68 = 989.02 : x
  2. Step 2: Convert to fraction form
    2,469.12/3,703.68 = 989.02/x
  3. Step 3: Cross multiply
    2,469.12x = 3,703.68 × 989.02
  4. Step 4: Simplify right side
    2,469.12x = 3,663,003.41
  5. Step 5: Solve for x
    x = 3,663,003.41/2,469.12
  6. Step 6: Final answer
    x = 1,483.52

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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.