Home / 8,418.31-11,618.77-5,272.67

Finding the Fourth Proportional to 8,418.31, 11,618.77 and 5,272.67

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Solution

The fourth proportional to 8,418.31, 11,618.77 and 5,272.67 is: 7,277.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.31 : 11,618.77 = 5,272.67 : x
  2. Step 2: Convert to fraction form
    8,418.31/11,618.77 = 5,272.67/x
  3. Step 3: Cross multiply
    8,418.31x = 11,618.77 × 5,272.67
  4. Step 4: Simplify right side
    8,418.31x = 61,261,940.02
  5. Step 5: Solve for x
    x = 61,261,940.02/8,418.31
  6. Step 6: Final answer
    x = 7,277.23

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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.