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Finding the Fourth Proportional to 7,081.46, 10,622.13 and 1,816.46

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Solution

The fourth proportional to 7,081.46, 10,622.13 and 1,816.46 is: 2,724.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.46 : 10,622.13 = 1,816.46 : x
  2. Step 2: Convert to fraction form
    7,081.46/10,622.13 = 1,816.46/x
  3. Step 3: Cross multiply
    7,081.46x = 10,622.13 × 1,816.46
  4. Step 4: Simplify right side
    7,081.46x = 19,294,674.26
  5. Step 5: Solve for x
    x = 19,294,674.26/7,081.46
  6. Step 6: Final answer
    x = 2,724.67

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Half scale
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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.