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Finding the Fourth Proportional to 2,805.30, 3,869.22 and 2,059.02

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Solution

The fourth proportional to 2,805.30, 3,869.22 and 2,059.02 is: 2,839.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.30 : 3,869.22 = 2,059.02 : x
  2. Step 2: Convert to fraction form
    2,805.30/3,869.22 = 2,059.02/x
  3. Step 3: Cross multiply
    2,805.30x = 3,869.22 × 2,059.02
  4. Step 4: Simplify right side
    2,805.30x = 7,966,801.36
  5. Step 5: Solve for x
    x = 7,966,801.36/2,805.30
  6. Step 6: Final answer
    x = 2,839.91

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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.