Home / 3,111.52-4,296-1,934.40

Finding the Fourth Proportional to 3,111.52, 4,296 and 1,934.40

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Solution

The fourth proportional to 3,111.52, 4,296 and 1,934.40 is: 2,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.52 : 4,296 = 1,934.40 : x
  2. Step 2: Convert to fraction form
    3,111.52/4,296 = 1,934.40/x
  3. Step 3: Cross multiply
    3,111.52x = 4,296 × 1,934.40
  4. Step 4: Simplify right side
    3,111.52x = 8,310,182.40
  5. Step 5: Solve for x
    x = 8,310,182.40/3,111.52
  6. Step 6: Final answer
    x = 2,670.78

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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.