Home / 3,915.07-5,402.77-2,146.62

Finding the Fourth Proportional to 3,915.07, 5,402.77 and 2,146.62

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Solution

The fourth proportional to 3,915.07, 5,402.77 and 2,146.62 is: 2,962.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.07 : 5,402.77 = 2,146.62 : x
  2. Step 2: Convert to fraction form
    3,915.07/5,402.77 = 2,146.62/x
  3. Step 3: Cross multiply
    3,915.07x = 5,402.77 × 2,146.62
  4. Step 4: Simplify right side
    3,915.07x = 11,597,694.14
  5. Step 5: Solve for x
    x = 11,597,694.14/3,915.07
  6. Step 6: Final answer
    x = 2,962.32

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1.5x scale

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.