Home / 7,875.44-11,815.19-2,945.11

Finding the Fourth Proportional to 7,875.44, 11,815.19 and 2,945.11

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Solution

The fourth proportional to 7,875.44, 11,815.19 and 2,945.11 is: 4,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.44 : 11,815.19 = 2,945.11 : x
  2. Step 2: Convert to fraction form
    7,875.44/11,815.19 = 2,945.11/x
  3. Step 3: Cross multiply
    7,875.44x = 11,815.19 × 2,945.11
  4. Step 4: Simplify right side
    7,875.44x = 34,797,019.50
  5. Step 5: Solve for x
    x = 34,797,019.50/7,875.44
  6. Step 6: Final answer
    x = 4,418.43

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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.