Home / 8,418.82-11,618.67-4,642.33

Finding the Fourth Proportional to 8,418.82, 11,618.67 and 4,642.33

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Solution

The fourth proportional to 8,418.82, 11,618.67 and 4,642.33 is: 6,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.82 : 11,618.67 = 4,642.33 : x
  2. Step 2: Convert to fraction form
    8,418.82/11,618.67 = 4,642.33/x
  3. Step 3: Cross multiply
    8,418.82x = 11,618.67 × 4,642.33
  4. Step 4: Simplify right side
    8,418.82x = 53,937,700.30
  5. Step 5: Solve for x
    x = 53,937,700.30/8,418.82
  6. Step 6: Final answer
    x = 6,406.80

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1.5x scale

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.