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Finding the Fourth Proportional to 8,574.24, 12,858.30 and 3,890.30

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Solution

The fourth proportional to 8,574.24, 12,858.30 and 3,890.30 is: 5,834.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.24 : 12,858.30 = 3,890.30 : x
  2. Step 2: Convert to fraction form
    8,574.24/12,858.30 = 3,890.30/x
  3. Step 3: Cross multiply
    8,574.24x = 12,858.30 × 3,890.30
  4. Step 4: Simplify right side
    8,574.24x = 50,022,644.49
  5. Step 5: Solve for x
    x = 50,022,644.49/8,574.24
  6. Step 6: Final answer
    x = 5,834.06

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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.