Home / 1,636.20-2,454.40-540.57

Finding the Fourth Proportional to 1,636.20, 2,454.40 and 540.57

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Solution

The fourth proportional to 1,636.20, 2,454.40 and 540.57 is: 810.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.20 : 2,454.40 = 540.57 : x
  2. Step 2: Convert to fraction form
    1,636.20/2,454.40 = 540.57/x
  3. Step 3: Cross multiply
    1,636.20x = 2,454.40 × 540.57
  4. Step 4: Simplify right side
    1,636.20x = 1,326,784.89
  5. Step 5: Solve for x
    x = 1,326,784.89/1,636.20
  6. Step 6: Final answer
    x = 810.89

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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.