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Finding the Fourth Proportional to 2,450.48, 3,675.65 and 989.58

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Solution

The fourth proportional to 2,450.48, 3,675.65 and 989.58 is: 1,484.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,450.48 : 3,675.65 = 989.58 : x
  2. Step 2: Convert to fraction form
    2,450.48/3,675.65 = 989.58/x
  3. Step 3: Cross multiply
    2,450.48x = 3,675.65 × 989.58
  4. Step 4: Simplify right side
    2,450.48x = 3,637,349.73
  5. Step 5: Solve for x
    x = 3,637,349.73/2,450.48
  6. Step 6: Final answer
    x = 1,484.34

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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.