Home / 8,100.84-11,179.02-5,121.84

Finding the Fourth Proportional to 8,100.84, 11,179.02 and 5,121.84

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Solution

The fourth proportional to 8,100.84, 11,179.02 and 5,121.84 is: 7,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.84 : 11,179.02 = 5,121.84 : x
  2. Step 2: Convert to fraction form
    8,100.84/11,179.02 = 5,121.84/x
  3. Step 3: Cross multiply
    8,100.84x = 11,179.02 × 5,121.84
  4. Step 4: Simplify right side
    8,100.84x = 57,257,151.80
  5. Step 5: Solve for x
    x = 57,257,151.80/8,100.84
  6. Step 6: Final answer
    x = 7,068.05

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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.