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Finding the Fourth Proportional to 7,986.95, 11,021.73 and 5,004.39

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Solution

The fourth proportional to 7,986.95, 11,021.73 and 5,004.39 is: 6,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.95 : 11,021.73 = 5,004.39 : x
  2. Step 2: Convert to fraction form
    7,986.95/11,021.73 = 5,004.39/x
  3. Step 3: Cross multiply
    7,986.95x = 11,021.73 × 5,004.39
  4. Step 4: Simplify right side
    7,986.95x = 55,157,075.46
  5. Step 5: Solve for x
    x = 55,157,075.46/7,986.95
  6. Step 6: Final answer
    x = 6,905.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.