Home / 8,100.90-11,179.30-5,118.08

Finding the Fourth Proportional to 8,100.90, 11,179.30 and 5,118.08

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Solution

The fourth proportional to 8,100.90, 11,179.30 and 5,118.08 is: 7,062.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.90 : 11,179.30 = 5,118.08 : x
  2. Step 2: Convert to fraction form
    8,100.90/11,179.30 = 5,118.08/x
  3. Step 3: Cross multiply
    8,100.90x = 11,179.30 × 5,118.08
  4. Step 4: Simplify right side
    8,100.90x = 57,216,551.74
  5. Step 5: Solve for x
    x = 57,216,551.74/8,100.90
  6. Step 6: Final answer
    x = 7,062.99

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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.