Home / 3,714.81-5,126.75-2,121.95

Finding the Fourth Proportional to 3,714.81, 5,126.75 and 2,121.95

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Solution

The fourth proportional to 3,714.81, 5,126.75 and 2,121.95 is: 2,928.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,714.81 : 5,126.75 = 2,121.95 : x
  2. Step 2: Convert to fraction form
    3,714.81/5,126.75 = 2,121.95/x
  3. Step 3: Cross multiply
    3,714.81x = 5,126.75 × 2,121.95
  4. Step 4: Simplify right side
    3,714.81x = 10,878,707.16
  5. Step 5: Solve for x
    x = 10,878,707.16/3,714.81
  6. Step 6: Final answer
    x = 2,928.47

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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.