Home / 3,111.56-4,293.84-1,714.28

Finding the Fourth Proportional to 3,111.56, 4,293.84 and 1,714.28

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Solution

The fourth proportional to 3,111.56, 4,293.84 and 1,714.28 is: 2,365.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.56 : 4,293.84 = 1,714.28 : x
  2. Step 2: Convert to fraction form
    3,111.56/4,293.84 = 1,714.28/x
  3. Step 3: Cross multiply
    3,111.56x = 4,293.84 × 1,714.28
  4. Step 4: Simplify right side
    3,111.56x = 7,360,844.04
  5. Step 5: Solve for x
    x = 7,360,844.04/3,111.56
  6. Step 6: Final answer
    x = 2,365.64

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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.