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Finding the Fourth Proportional to 8,297.40, 12,448.30 and 3,615.40

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Solution

The fourth proportional to 8,297.40, 12,448.30 and 3,615.40 is: 5,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,297.40 : 12,448.30 = 3,615.40 : x
  2. Step 2: Convert to fraction form
    8,297.40/12,448.30 = 3,615.40/x
  3. Step 3: Cross multiply
    8,297.40x = 12,448.30 × 3,615.40
  4. Step 4: Simplify right side
    8,297.40x = 45,005,583.82
  5. Step 5: Solve for x
    x = 45,005,583.82/8,297.40
  6. Step 6: Final answer
    x = 5,424.06

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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.