Home / 8,699.45-12,004.34-5,161.97

Finding the Fourth Proportional to 8,699.45, 12,004.34 and 5,161.97

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Solution

The fourth proportional to 8,699.45, 12,004.34 and 5,161.97 is: 7,122.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.45 : 12,004.34 = 5,161.97 : x
  2. Step 2: Convert to fraction form
    8,699.45/12,004.34 = 5,161.97/x
  3. Step 3: Cross multiply
    8,699.45x = 12,004.34 × 5,161.97
  4. Step 4: Simplify right side
    8,699.45x = 61,966,047.15
  5. Step 5: Solve for x
    x = 61,966,047.15/8,699.45
  6. Step 6: Final answer
    x = 7,122.99

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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.