Home / 7,980.03-11,969.73-4,289.43

Finding the Fourth Proportional to 7,980.03, 11,969.73 and 4,289.43

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Solution

The fourth proportional to 7,980.03, 11,969.73 and 4,289.43 is: 6,433.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.03 : 11,969.73 = 4,289.43 : x
  2. Step 2: Convert to fraction form
    7,980.03/11,969.73 = 4,289.43/x
  3. Step 3: Cross multiply
    7,980.03x = 11,969.73 × 4,289.43
  4. Step 4: Simplify right side
    7,980.03x = 51,343,318.95
  5. Step 5: Solve for x
    x = 51,343,318.95/7,980.03
  6. Step 6: Final answer
    x = 6,433.98

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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.