Home / 2,915.91-4,375.84-1,271.51

Finding the Fourth Proportional to 2,915.91, 4,375.84 and 1,271.51

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Solution

The fourth proportional to 2,915.91, 4,375.84 and 1,271.51 is: 1,908.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.91 : 4,375.84 = 1,271.51 : x
  2. Step 2: Convert to fraction form
    2,915.91/4,375.84 = 1,271.51/x
  3. Step 3: Cross multiply
    2,915.91x = 4,375.84 × 1,271.51
  4. Step 4: Simplify right side
    2,915.91x = 5,563,899.26
  5. Step 5: Solve for x
    x = 5,563,899.26/2,915.91
  6. Step 6: Final answer
    x = 1,908.12

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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.