Home / 2,930.20-4,395.52-982.40

Finding the Fourth Proportional to 2,930.20, 4,395.52 and 982.40

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Solution

The fourth proportional to 2,930.20, 4,395.52 and 982.40 is: 1,473.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.20 : 4,395.52 = 982.40 : x
  2. Step 2: Convert to fraction form
    2,930.20/4,395.52 = 982.40/x
  3. Step 3: Cross multiply
    2,930.20x = 4,395.52 × 982.40
  4. Step 4: Simplify right side
    2,930.20x = 4,318,158.85
  5. Step 5: Solve for x
    x = 4,318,158.85/2,930.20
  6. Step 6: Final answer
    x = 1,473.67

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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.