Home / 8,272.48-11,418.96-5,478.88

Finding the Fourth Proportional to 8,272.48, 11,418.96 and 5,478.88

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Solution

The fourth proportional to 8,272.48, 11,418.96 and 5,478.88 is: 7,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.48 : 11,418.96 = 5,478.88 : x
  2. Step 2: Convert to fraction form
    8,272.48/11,418.96 = 5,478.88/x
  3. Step 3: Cross multiply
    8,272.48x = 11,418.96 × 5,478.88
  4. Step 4: Simplify right side
    8,272.48x = 62,563,111.56
  5. Step 5: Solve for x
    x = 62,563,111.56/8,272.48
  6. Step 6: Final answer
    x = 7,562.80

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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.