Home / 1,918.47-2,878.07-1,327.98

Finding the Fourth Proportional to 1,918.47, 2,878.07 and 1,327.98

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Solution

The fourth proportional to 1,918.47, 2,878.07 and 1,327.98 is: 1,992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.47 : 2,878.07 = 1,327.98 : x
  2. Step 2: Convert to fraction form
    1,918.47/2,878.07 = 1,327.98/x
  3. Step 3: Cross multiply
    1,918.47x = 2,878.07 × 1,327.98
  4. Step 4: Simplify right side
    1,918.47x = 3,822,012.76
  5. Step 5: Solve for x
    x = 3,822,012.76/1,918.47
  6. Step 6: Final answer
    x = 1,992.22

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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.