Home / 7,145.10-10,771.74-6,722.28

Finding the Fourth Proportional to 7,145.10, 10,771.74 and 6,722.28

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Solution

The fourth proportional to 7,145.10, 10,771.74 and 6,722.28 is: 10,134.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.10 : 10,771.74 = 6,722.28 : x
  2. Step 2: Convert to fraction form
    7,145.10/10,771.74 = 6,722.28/x
  3. Step 3: Cross multiply
    7,145.10x = 10,771.74 × 6,722.28
  4. Step 4: Simplify right side
    7,145.10x = 72,410,652.37
  5. Step 5: Solve for x
    x = 72,410,652.37/7,145.10
  6. Step 6: Final answer
    x = 10,134.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.