Home / 1,918.31-2,878.07-1,458.29

Finding the Fourth Proportional to 1,918.31, 2,878.07 and 1,458.29

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Solution

The fourth proportional to 1,918.31, 2,878.07 and 1,458.29 is: 2,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.31 : 2,878.07 = 1,458.29 : x
  2. Step 2: Convert to fraction form
    1,918.31/2,878.07 = 1,458.29/x
  3. Step 3: Cross multiply
    1,918.31x = 2,878.07 × 1,458.29
  4. Step 4: Simplify right side
    1,918.31x = 4,197,060.60
  5. Step 5: Solve for x
    x = 4,197,060.60/1,918.31
  6. Step 6: Final answer
    x = 2,187.90

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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.