Home / 8,680.81-13,018.53-3,133.44

Finding the Fourth Proportional to 8,680.81, 13,018.53 and 3,133.44

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Solution

The fourth proportional to 8,680.81, 13,018.53 and 3,133.44 is: 4,699.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.81 : 13,018.53 = 3,133.44 : x
  2. Step 2: Convert to fraction form
    8,680.81/13,018.53 = 3,133.44/x
  3. Step 3: Cross multiply
    8,680.81x = 13,018.53 × 3,133.44
  4. Step 4: Simplify right side
    8,680.81x = 40,792,782.64
  5. Step 5: Solve for x
    x = 40,792,782.64/8,680.81
  6. Step 6: Final answer
    x = 4,699.19

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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.