Home / 7,105.24-10,657.86-1,911.64

Finding the Fourth Proportional to 7,105.24, 10,657.86 and 1,911.64

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Solution

The fourth proportional to 7,105.24, 10,657.86 and 1,911.64 is: 2,867.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,105.24 : 10,657.86 = 1,911.64 : x
  2. Step 2: Convert to fraction form
    7,105.24/10,657.86 = 1,911.64/x
  3. Step 3: Cross multiply
    7,105.24x = 10,657.86 × 1,911.64
  4. Step 4: Simplify right side
    7,105.24x = 20,373,991.49
  5. Step 5: Solve for x
    x = 20,373,991.49/7,105.24
  6. Step 6: Final answer
    x = 2,867.46

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Double scale
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Similar ratio
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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.