Home / 8,290.81-12,440.85-3,908.26

Finding the Fourth Proportional to 8,290.81, 12,440.85 and 3,908.26

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Solution

The fourth proportional to 8,290.81, 12,440.85 and 3,908.26 is: 5,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.81 : 12,440.85 = 3,908.26 : x
  2. Step 2: Convert to fraction form
    8,290.81/12,440.85 = 3,908.26/x
  3. Step 3: Cross multiply
    8,290.81x = 12,440.85 × 3,908.26
  4. Step 4: Simplify right side
    8,290.81x = 48,622,076.42
  5. Step 5: Solve for x
    x = 48,622,076.42/8,290.81
  6. Step 6: Final answer
    x = 5,864.57

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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.