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Finding the Fourth Proportional to 8,240.86, 12,361.32 and 2,397.64

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Solution

The fourth proportional to 8,240.86, 12,361.32 and 2,397.64 is: 3,596.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,240.86 : 12,361.32 = 2,397.64 : x
  2. Step 2: Convert to fraction form
    8,240.86/12,361.32 = 2,397.64/x
  3. Step 3: Cross multiply
    8,240.86x = 12,361.32 × 2,397.64
  4. Step 4: Simplify right side
    8,240.86x = 29,637,995.28
  5. Step 5: Solve for x
    x = 29,637,995.28/8,240.86
  6. Step 6: Final answer
    x = 3,596.47

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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.