Home / 2,920.86-4,381.29-1,276.97

Finding the Fourth Proportional to 2,920.86, 4,381.29 and 1,276.97

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Solution

The fourth proportional to 2,920.86, 4,381.29 and 1,276.97 is: 1,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.86 : 4,381.29 = 1,276.97 : x
  2. Step 2: Convert to fraction form
    2,920.86/4,381.29 = 1,276.97/x
  3. Step 3: Cross multiply
    2,920.86x = 4,381.29 × 1,276.97
  4. Step 4: Simplify right side
    2,920.86x = 5,594,753.98
  5. Step 5: Solve for x
    x = 5,594,753.98/2,920.86
  6. Step 6: Final answer
    x = 1,915.45

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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.