Home / 8,205.63-11,328.45-5,419.23

Finding the Fourth Proportional to 8,205.63, 11,328.45 and 5,419.23

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Solution

The fourth proportional to 8,205.63, 11,328.45 and 5,419.23 is: 7,481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.63 : 11,328.45 = 5,419.23 : x
  2. Step 2: Convert to fraction form
    8,205.63/11,328.45 = 5,419.23/x
  3. Step 3: Cross multiply
    8,205.63x = 11,328.45 × 5,419.23
  4. Step 4: Simplify right side
    8,205.63x = 61,391,476.09
  5. Step 5: Solve for x
    x = 61,391,476.09/8,205.63
  6. Step 6: Final answer
    x = 7,481.63

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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.