Home / 2,918.90-4,367.42-1,621.28

Finding the Fourth Proportional to 2,918.90, 4,367.42 and 1,621.28

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Solution

The fourth proportional to 2,918.90, 4,367.42 and 1,621.28 is: 2,425.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.90 : 4,367.42 = 1,621.28 : x
  2. Step 2: Convert to fraction form
    2,918.90/4,367.42 = 1,621.28/x
  3. Step 3: Cross multiply
    2,918.90x = 4,367.42 × 1,621.28
  4. Step 4: Simplify right side
    2,918.90x = 7,080,802.59
  5. Step 5: Solve for x
    x = 7,080,802.59/2,918.90
  6. Step 6: Final answer
    x = 2,425.85

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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.