Home / 1,219.97-1,829.50-386.93

Finding the Fourth Proportional to 1,219.97, 1,829.50 and 386.93

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Solution

The fourth proportional to 1,219.97, 1,829.50 and 386.93 is: 580.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.97 : 1,829.50 = 386.93 : x
  2. Step 2: Convert to fraction form
    1,219.97/1,829.50 = 386.93/x
  3. Step 3: Cross multiply
    1,219.97x = 1,829.50 × 386.93
  4. Step 4: Simplify right side
    1,219.97x = 707,886.50
  5. Step 5: Solve for x
    x = 707,886.50/1,219.97
  6. Step 6: Final answer
    x = 580.25

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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.