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Finding the Fourth Proportional to 2,809.46, 4,211.36 and 959.32

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Solution

The fourth proportional to 2,809.46, 4,211.36 and 959.32 is: 1,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.46 : 4,211.36 = 959.32 : x
  2. Step 2: Convert to fraction form
    2,809.46/4,211.36 = 959.32/x
  3. Step 3: Cross multiply
    2,809.46x = 4,211.36 × 959.32
  4. Step 4: Simplify right side
    2,809.46x = 4,040,036.12
  5. Step 5: Solve for x
    x = 4,040,036.12/2,809.46
  6. Step 6: Final answer
    x = 1,438.01

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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.