Home / 5,290.85-7,936.20-1,781.63

Finding the Fourth Proportional to 5,290.85, 7,936.20 and 1,781.63

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Solution

The fourth proportional to 5,290.85, 7,936.20 and 1,781.63 is: 2,672.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.85 : 7,936.20 = 1,781.63 : x
  2. Step 2: Convert to fraction form
    5,290.85/7,936.20 = 1,781.63/x
  3. Step 3: Cross multiply
    5,290.85x = 7,936.20 × 1,781.63
  4. Step 4: Simplify right side
    5,290.85x = 14,139,332.33
  5. Step 5: Solve for x
    x = 14,139,332.33/5,290.85
  6. Step 6: Final answer
    x = 2,672.41

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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.