Home / 1,298.22-1,790.40-1,148.97

Finding the Fourth Proportional to 1,298.22, 1,790.40 and 1,148.97

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Solution

The fourth proportional to 1,298.22, 1,790.40 and 1,148.97 is: 1,584.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.22 : 1,790.40 = 1,148.97 : x
  2. Step 2: Convert to fraction form
    1,298.22/1,790.40 = 1,148.97/x
  3. Step 3: Cross multiply
    1,298.22x = 1,790.40 × 1,148.97
  4. Step 4: Simplify right side
    1,298.22x = 2,057,115.89
  5. Step 5: Solve for x
    x = 2,057,115.89/1,298.22
  6. Step 6: Final answer
    x = 1,584.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.