Home / 3,915.20-5,403-2,146.82

Finding the Fourth Proportional to 3,915.20, 5,403 and 2,146.82

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Solution

The fourth proportional to 3,915.20, 5,403 and 2,146.82 is: 2,962.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.20 : 5,403 = 2,146.82 : x
  2. Step 2: Convert to fraction form
    3,915.20/5,403 = 2,146.82/x
  3. Step 3: Cross multiply
    3,915.20x = 5,403 × 2,146.82
  4. Step 4: Simplify right side
    3,915.20x = 11,599,268.46
  5. Step 5: Solve for x
    x = 11,599,268.46/3,915.20
  6. Step 6: Final answer
    x = 2,962.62

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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.