Home / 3,714.28-5,125.86-2,121.19

Finding the Fourth Proportional to 3,714.28, 5,125.86 and 2,121.19

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Solution

The fourth proportional to 3,714.28, 5,125.86 and 2,121.19 is: 2,927.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,714.28 : 5,125.86 = 2,121.19 : x
  2. Step 2: Convert to fraction form
    3,714.28/5,125.86 = 2,121.19/x
  3. Step 3: Cross multiply
    3,714.28x = 5,125.86 × 2,121.19
  4. Step 4: Simplify right side
    3,714.28x = 10,872,904.19
  5. Step 5: Solve for x
    x = 10,872,904.19/3,714.28
  6. Step 6: Final answer
    x = 2,927.32

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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.