Home / 3,277.60-4,915.20-1,086.40

Finding the Fourth Proportional to 3,277.60, 4,915.20 and 1,086.40

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Solution

The fourth proportional to 3,277.60, 4,915.20 and 1,086.40 is: 1,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,277.60 : 4,915.20 = 1,086.40 : x
  2. Step 2: Convert to fraction form
    3,277.60/4,915.20 = 1,086.40/x
  3. Step 3: Cross multiply
    3,277.60x = 4,915.20 × 1,086.40
  4. Step 4: Simplify right side
    3,277.60x = 5,339,873.28
  5. Step 5: Solve for x
    x = 5,339,873.28/3,277.60
  6. Step 6: Final answer
    x = 1,629.20

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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.