Home / 8,918.78-13,377.36-3,075.44

Finding the Fourth Proportional to 8,918.78, 13,377.36 and 3,075.44

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Solution

The fourth proportional to 8,918.78, 13,377.36 and 3,075.44 is: 4,612.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.78 : 13,377.36 = 3,075.44 : x
  2. Step 2: Convert to fraction form
    8,918.78/13,377.36 = 3,075.44/x
  3. Step 3: Cross multiply
    8,918.78x = 13,377.36 × 3,075.44
  4. Step 4: Simplify right side
    8,918.78x = 41,141,268.04
  5. Step 5: Solve for x
    x = 41,141,268.04/8,918.78
  6. Step 6: Final answer
    x = 4,612.88

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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.