Home / 8,135.29-11,235.92-5,478.09

Finding the Fourth Proportional to 8,135.29, 11,235.92 and 5,478.09

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Solution

The fourth proportional to 8,135.29, 11,235.92 and 5,478.09 is: 7,565.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,135.29 : 11,235.92 = 5,478.09 : x
  2. Step 2: Convert to fraction form
    8,135.29/11,235.92 = 5,478.09/x
  3. Step 3: Cross multiply
    8,135.29x = 11,235.92 × 5,478.09
  4. Step 4: Simplify right side
    8,135.29x = 61,551,380.99
  5. Step 5: Solve for x
    x = 61,551,380.99/8,135.29
  6. Step 6: Final answer
    x = 7,565.97

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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.