Home / 8,418.35-12,627.51-2,178.98

Finding the Fourth Proportional to 8,418.35, 12,627.51 and 2,178.98

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Solution

The fourth proportional to 8,418.35, 12,627.51 and 2,178.98 is: 3,268.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.35 : 12,627.51 = 2,178.98 : x
  2. Step 2: Convert to fraction form
    8,418.35/12,627.51 = 2,178.98/x
  3. Step 3: Cross multiply
    8,418.35x = 12,627.51 × 2,178.98
  4. Step 4: Simplify right side
    8,418.35x = 27,515,151.07
  5. Step 5: Solve for x
    x = 27,515,151.07/8,418.35
  6. Step 6: Final answer
    x = 3,268.47

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1.5x scale

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.