Home / 7,165.12-9,889.44-5,153.92

Finding the Fourth Proportional to 7,165.12, 9,889.44 and 5,153.92

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Solution

The fourth proportional to 7,165.12, 9,889.44 and 5,153.92 is: 7,113.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.12 : 9,889.44 = 5,153.92 : x
  2. Step 2: Convert to fraction form
    7,165.12/9,889.44 = 5,153.92/x
  3. Step 3: Cross multiply
    7,165.12x = 9,889.44 × 5,153.92
  4. Step 4: Simplify right side
    7,165.12x = 50,969,382.60
  5. Step 5: Solve for x
    x = 50,969,382.60/7,165.12
  6. Step 6: Final answer
    x = 7,113.54

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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.