Home / 5,311.37-7,967.06-1,415.78

Finding the Fourth Proportional to 5,311.37, 7,967.06 and 1,415.78

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Solution

The fourth proportional to 5,311.37, 7,967.06 and 1,415.78 is: 2,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.37 : 7,967.06 = 1,415.78 : x
  2. Step 2: Convert to fraction form
    5,311.37/7,967.06 = 1,415.78/x
  3. Step 3: Cross multiply
    5,311.37x = 7,967.06 × 1,415.78
  4. Step 4: Simplify right side
    5,311.37x = 11,279,592.48
  5. Step 5: Solve for x
    x = 11,279,592.48/5,311.37
  6. Step 6: Final answer
    x = 2,123.67

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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.