Home / 6,918.48-10,379.46-1,988.55

Finding the Fourth Proportional to 6,918.48, 10,379.46 and 1,988.55

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Solution

The fourth proportional to 6,918.48, 10,379.46 and 1,988.55 is: 2,983.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.48 : 10,379.46 = 1,988.55 : x
  2. Step 2: Convert to fraction form
    6,918.48/10,379.46 = 1,988.55/x
  3. Step 3: Cross multiply
    6,918.48x = 10,379.46 × 1,988.55
  4. Step 4: Simplify right side
    6,918.48x = 20,640,075.18
  5. Step 5: Solve for x
    x = 20,640,075.18/6,918.48
  6. Step 6: Final answer
    x = 2,983.33

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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.