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Finding the Fourth Proportional to 9,358.88, 12,918.48 and 5,825.12

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Solution

The fourth proportional to 9,358.88, 12,918.48 and 5,825.12 is: 8,040.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.88 : 12,918.48 = 5,825.12 : x
  2. Step 2: Convert to fraction form
    9,358.88/12,918.48 = 5,825.12/x
  3. Step 3: Cross multiply
    9,358.88x = 12,918.48 × 5,825.12
  4. Step 4: Simplify right side
    9,358.88x = 75,251,696.22
  5. Step 5: Solve for x
    x = 75,251,696.22/9,358.88
  6. Step 6: Final answer
    x = 8,040.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.