Home / 2,921.16-4,382.94-1,276.86

Finding the Fourth Proportional to 2,921.16, 4,382.94 and 1,276.86

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Solution

The fourth proportional to 2,921.16, 4,382.94 and 1,276.86 is: 1,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.16 : 4,382.94 = 1,276.86 : x
  2. Step 2: Convert to fraction form
    2,921.16/4,382.94 = 1,276.86/x
  3. Step 3: Cross multiply
    2,921.16x = 4,382.94 × 1,276.86
  4. Step 4: Simplify right side
    2,921.16x = 5,596,400.77
  5. Step 5: Solve for x
    x = 5,596,400.77/2,921.16
  6. Step 6: Final answer
    x = 1,915.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.