Home / 9,219.19-12,722.07-5,240.67

Finding the Fourth Proportional to 9,219.19, 12,722.07 and 5,240.67

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Solution

The fourth proportional to 9,219.19, 12,722.07 and 5,240.67 is: 7,231.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.19 : 12,722.07 = 5,240.67 : x
  2. Step 2: Convert to fraction form
    9,219.19/12,722.07 = 5,240.67/x
  3. Step 3: Cross multiply
    9,219.19x = 12,722.07 × 5,240.67
  4. Step 4: Simplify right side
    9,219.19x = 66,672,170.59
  5. Step 5: Solve for x
    x = 66,672,170.59/9,219.19
  6. Step 6: Final answer
    x = 7,231.89

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.