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Finding the Fourth Proportional to 3,860.88, 5,784.36 and 3,248.40

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Solution

The fourth proportional to 3,860.88, 5,784.36 and 3,248.40 is: 4,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.88 : 5,784.36 = 3,248.40 : x
  2. Step 2: Convert to fraction form
    3,860.88/5,784.36 = 3,248.40/x
  3. Step 3: Cross multiply
    3,860.88x = 5,784.36 × 3,248.40
  4. Step 4: Simplify right side
    3,860.88x = 18,789,915.02
  5. Step 5: Solve for x
    x = 18,789,915.02/3,860.88
  6. Step 6: Final answer
    x = 4,866.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.