Home / 10,478.52-15,715.98-3,082.80

Finding the Fourth Proportional to 10,478.52, 15,715.98 and 3,082.80

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Solution

The fourth proportional to 10,478.52, 15,715.98 and 3,082.80 is: 4,623.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.52 : 15,715.98 = 3,082.80 : x
  2. Step 2: Convert to fraction form
    10,478.52/15,715.98 = 3,082.80/x
  3. Step 3: Cross multiply
    10,478.52x = 15,715.98 × 3,082.80
  4. Step 4: Simplify right side
    10,478.52x = 48,449,223.14
  5. Step 5: Solve for x
    x = 48,449,223.14/10,478.52
  6. Step 6: Final answer
    x = 4,623.67

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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.