Home / 3,143.52-4,342.38-2,922.12

Finding the Fourth Proportional to 3,143.52, 4,342.38 and 2,922.12

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Solution

The fourth proportional to 3,143.52, 4,342.38 and 2,922.12 is: 4,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.52 : 4,342.38 = 2,922.12 : x
  2. Step 2: Convert to fraction form
    3,143.52/4,342.38 = 2,922.12/x
  3. Step 3: Cross multiply
    3,143.52x = 4,342.38 × 2,922.12
  4. Step 4: Simplify right side
    3,143.52x = 12,688,955.45
  5. Step 5: Solve for x
    x = 12,688,955.45/3,143.52
  6. Step 6: Final answer
    x = 4,036.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.