Home / 8,428.35-11,645.56-6,673.28

Finding the Fourth Proportional to 8,428.35, 11,645.56 and 6,673.28

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Solution

The fourth proportional to 8,428.35, 11,645.56 and 6,673.28 is: 9,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.35 : 11,645.56 = 6,673.28 : x
  2. Step 2: Convert to fraction form
    8,428.35/11,645.56 = 6,673.28/x
  3. Step 3: Cross multiply
    8,428.35x = 11,645.56 × 6,673.28
  4. Step 4: Simplify right side
    8,428.35x = 77,714,049.27
  5. Step 5: Solve for x
    x = 77,714,049.27/8,428.35
  6. Step 6: Final answer
    x = 9,220.55

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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.