Home / 2,989.16-4,126.89-1,927.44

Finding the Fourth Proportional to 2,989.16, 4,126.89 and 1,927.44

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Solution

The fourth proportional to 2,989.16, 4,126.89 and 1,927.44 is: 2,661.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.16 : 4,126.89 = 1,927.44 : x
  2. Step 2: Convert to fraction form
    2,989.16/4,126.89 = 1,927.44/x
  3. Step 3: Cross multiply
    2,989.16x = 4,126.89 × 1,927.44
  4. Step 4: Simplify right side
    2,989.16x = 7,954,332.86
  5. Step 5: Solve for x
    x = 7,954,332.86/2,989.16
  6. Step 6: Final answer
    x = 2,661.06

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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.