Home / 7,821.56-11,732.70-2,890.28

Finding the Fourth Proportional to 7,821.56, 11,732.70 and 2,890.28

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Solution

The fourth proportional to 7,821.56, 11,732.70 and 2,890.28 is: 4,335.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.56 : 11,732.70 = 2,890.28 : x
  2. Step 2: Convert to fraction form
    7,821.56/11,732.70 = 2,890.28/x
  3. Step 3: Cross multiply
    7,821.56x = 11,732.70 × 2,890.28
  4. Step 4: Simplify right side
    7,821.56x = 33,910,788.16
  5. Step 5: Solve for x
    x = 33,910,788.16/7,821.56
  6. Step 6: Final answer
    x = 4,335.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.