Home / 5,243.21-7,235.45-2,885.34

Finding the Fourth Proportional to 5,243.21, 7,235.45 and 2,885.34

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Solution

The fourth proportional to 5,243.21, 7,235.45 and 2,885.34 is: 3,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.21 : 7,235.45 = 2,885.34 : x
  2. Step 2: Convert to fraction form
    5,243.21/7,235.45 = 2,885.34/x
  3. Step 3: Cross multiply
    5,243.21x = 7,235.45 × 2,885.34
  4. Step 4: Simplify right side
    5,243.21x = 20,876,718.88
  5. Step 5: Solve for x
    x = 20,876,718.88/5,243.21
  6. Step 6: Final answer
    x = 3,981.67

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Half scale
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Double scale
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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.