Home / 8,918.48-13,380.40-2,678.56

Finding the Fourth Proportional to 8,918.48, 13,380.40 and 2,678.56

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Solution

The fourth proportional to 8,918.48, 13,380.40 and 2,678.56 is: 4,018.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.48 : 13,380.40 = 2,678.56 : x
  2. Step 2: Convert to fraction form
    8,918.48/13,380.40 = 2,678.56/x
  3. Step 3: Cross multiply
    8,918.48x = 13,380.40 × 2,678.56
  4. Step 4: Simplify right side
    8,918.48x = 35,840,204.22
  5. Step 5: Solve for x
    x = 35,840,204.22/8,918.48
  6. Step 6: Final answer
    x = 4,018.64

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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.