Home / 7,829.12-11,748.76-3,391.12

Finding the Fourth Proportional to 7,829.12, 11,748.76 and 3,391.12

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Solution

The fourth proportional to 7,829.12, 11,748.76 and 3,391.12 is: 5,088.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.12 : 11,748.76 = 3,391.12 : x
  2. Step 2: Convert to fraction form
    7,829.12/11,748.76 = 3,391.12/x
  3. Step 3: Cross multiply
    7,829.12x = 11,748.76 × 3,391.12
  4. Step 4: Simplify right side
    7,829.12x = 39,841,455.01
  5. Step 5: Solve for x
    x = 39,841,455.01/7,829.12
  6. Step 6: Final answer
    x = 5,088.88

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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.