Home / 2,915.96-4,370.90-1,272.07

Finding the Fourth Proportional to 2,915.96, 4,370.90 and 1,272.07

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Solution

The fourth proportional to 2,915.96, 4,370.90 and 1,272.07 is: 1,906.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.96 : 4,370.90 = 1,272.07 : x
  2. Step 2: Convert to fraction form
    2,915.96/4,370.90 = 1,272.07/x
  3. Step 3: Cross multiply
    2,915.96x = 4,370.90 × 1,272.07
  4. Step 4: Simplify right side
    2,915.96x = 5,560,068.91
  5. Step 5: Solve for x
    x = 5,560,068.91/2,915.96
  6. Step 6: Final answer
    x = 1,906.77

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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.