Home / 4,973.40-7,443.90-3,990.60

Finding the Fourth Proportional to 4,973.40, 7,443.90 and 3,990.60

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Solution

The fourth proportional to 4,973.40, 7,443.90 and 3,990.60 is: 5,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,973.40 : 7,443.90 = 3,990.60 : x
  2. Step 2: Convert to fraction form
    4,973.40/7,443.90 = 3,990.60/x
  3. Step 3: Cross multiply
    4,973.40x = 7,443.90 × 3,990.60
  4. Step 4: Simplify right side
    4,973.40x = 29,705,627.34
  5. Step 5: Solve for x
    x = 29,705,627.34/4,973.40
  6. Step 6: Final answer
    x = 5,972.90

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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.