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Finding the Fourth Proportional to 8,574.88, 12,864.24 and 3,958.24

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Solution

The fourth proportional to 8,574.88, 12,864.24 and 3,958.24 is: 5,938.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.88 : 12,864.24 = 3,958.24 : x
  2. Step 2: Convert to fraction form
    8,574.88/12,864.24 = 3,958.24/x
  3. Step 3: Cross multiply
    8,574.88x = 12,864.24 × 3,958.24
  4. Step 4: Simplify right side
    8,574.88x = 50,919,749.34
  5. Step 5: Solve for x
    x = 50,919,749.34/8,574.88
  6. Step 6: Final answer
    x = 5,938.25

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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.