Home / 8,861.37-13,222.64-7,930.53

Finding the Fourth Proportional to 8,861.37, 13,222.64 and 7,930.53

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Solution

The fourth proportional to 8,861.37, 13,222.64 and 7,930.53 is: 11,833.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.37 : 13,222.64 = 7,930.53 : x
  2. Step 2: Convert to fraction form
    8,861.37/13,222.64 = 7,930.53/x
  3. Step 3: Cross multiply
    8,861.37x = 13,222.64 × 7,930.53
  4. Step 4: Simplify right side
    8,861.37x = 104,862,503.55
  5. Step 5: Solve for x
    x = 104,862,503.55/8,861.37
  6. Step 6: Final answer
    x = 11,833.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.