Home / 3,915.14-5,402.88-2,146.70

Finding the Fourth Proportional to 3,915.14, 5,402.88 and 2,146.70

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Solution

The fourth proportional to 3,915.14, 5,402.88 and 2,146.70 is: 2,962.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.14 : 5,402.88 = 2,146.70 : x
  2. Step 2: Convert to fraction form
    3,915.14/5,402.88 = 2,146.70/x
  3. Step 3: Cross multiply
    3,915.14x = 5,402.88 × 2,146.70
  4. Step 4: Simplify right side
    3,915.14x = 11,598,362.50
  5. Step 5: Solve for x
    x = 11,598,362.50/3,915.14
  6. Step 6: Final answer
    x = 2,962.44

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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.