Home / 2,809.94-4,215.63-1,271.06

Finding the Fourth Proportional to 2,809.94, 4,215.63 and 1,271.06

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Solution

The fourth proportional to 2,809.94, 4,215.63 and 1,271.06 is: 1,906.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.94 : 4,215.63 = 1,271.06 : x
  2. Step 2: Convert to fraction form
    2,809.94/4,215.63 = 1,271.06/x
  3. Step 3: Cross multiply
    2,809.94x = 4,215.63 × 1,271.06
  4. Step 4: Simplify right side
    2,809.94x = 5,358,318.67
  5. Step 5: Solve for x
    x = 5,358,318.67/2,809.94
  6. Step 6: Final answer
    x = 1,906.92

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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.