Home / 2,143.95-3,215.52-1,047.62

Finding the Fourth Proportional to 2,143.95, 3,215.52 and 1,047.62

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Solution

The fourth proportional to 2,143.95, 3,215.52 and 1,047.62 is: 1,571.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.95 : 3,215.52 = 1,047.62 : x
  2. Step 2: Convert to fraction form
    2,143.95/3,215.52 = 1,047.62/x
  3. Step 3: Cross multiply
    2,143.95x = 3,215.52 × 1,047.62
  4. Step 4: Simplify right side
    2,143.95x = 3,368,626.98
  5. Step 5: Solve for x
    x = 3,368,626.98/2,143.95
  6. Step 6: Final answer
    x = 1,571.22

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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.