Home / 3,111.48-4,295.84-1,934.15

Finding the Fourth Proportional to 3,111.48, 4,295.84 and 1,934.15

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Solution

The fourth proportional to 3,111.48, 4,295.84 and 1,934.15 is: 2,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.48 : 4,295.84 = 1,934.15 : x
  2. Step 2: Convert to fraction form
    3,111.48/4,295.84 = 1,934.15/x
  3. Step 3: Cross multiply
    3,111.48x = 4,295.84 × 1,934.15
  4. Step 4: Simplify right side
    3,111.48x = 8,308,767.79
  5. Step 5: Solve for x
    x = 8,308,767.79/3,111.48
  6. Step 6: Final answer
    x = 2,670.36

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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.