Home / 3,915.39-5,403.30-2,146.89

Finding the Fourth Proportional to 3,915.39, 5,403.30 and 2,146.89

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Solution

The fourth proportional to 3,915.39, 5,403.30 and 2,146.89 is: 2,962.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.39 : 5,403.30 = 2,146.89 : x
  2. Step 2: Convert to fraction form
    3,915.39/5,403.30 = 2,146.89/x
  3. Step 3: Cross multiply
    3,915.39x = 5,403.30 × 2,146.89
  4. Step 4: Simplify right side
    3,915.39x = 11,600,290.74
  5. Step 5: Solve for x
    x = 11,600,290.74/3,915.39
  6. Step 6: Final answer
    x = 2,962.74

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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.