Home / 5,121.41-7,685.10-2,159.67

Finding the Fourth Proportional to 5,121.41, 7,685.10 and 2,159.67

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Solution

The fourth proportional to 5,121.41, 7,685.10 and 2,159.67 is: 3,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.41 : 7,685.10 = 2,159.67 : x
  2. Step 2: Convert to fraction form
    5,121.41/7,685.10 = 2,159.67/x
  3. Step 3: Cross multiply
    5,121.41x = 7,685.10 × 2,159.67
  4. Step 4: Simplify right side
    5,121.41x = 16,597,279.92
  5. Step 5: Solve for x
    x = 16,597,279.92/5,121.41
  6. Step 6: Final answer
    x = 3,240.76

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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.