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Finding the Fourth Proportional to 10,440.63, 15,660.63 and 3,866.67

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Solution

The fourth proportional to 10,440.63, 15,660.63 and 3,866.67 is: 5,799.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.63 : 15,660.63 = 3,866.67 : x
  2. Step 2: Convert to fraction form
    10,440.63/15,660.63 = 3,866.67/x
  3. Step 3: Cross multiply
    10,440.63x = 15,660.63 × 3,866.67
  4. Step 4: Simplify right side
    10,440.63x = 60,554,488.20
  5. Step 5: Solve for x
    x = 60,554,488.20/10,440.63
  6. Step 6: Final answer
    x = 5,799.89

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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.