Home / 3,915.16-5,402.87-2,146.72

Finding the Fourth Proportional to 3,915.16, 5,402.87 and 2,146.72

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Solution

The fourth proportional to 3,915.16, 5,402.87 and 2,146.72 is: 2,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.16 : 5,402.87 = 2,146.72 : x
  2. Step 2: Convert to fraction form
    3,915.16/5,402.87 = 2,146.72/x
  3. Step 3: Cross multiply
    3,915.16x = 5,402.87 × 2,146.72
  4. Step 4: Simplify right side
    3,915.16x = 11,598,449.09
  5. Step 5: Solve for x
    x = 11,598,449.09/3,915.16
  6. Step 6: Final answer
    x = 2,962.45

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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.