Home / 3,591.40-5,385.66-1,281.64

Finding the Fourth Proportional to 3,591.40, 5,385.66 and 1,281.64

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Solution

The fourth proportional to 3,591.40, 5,385.66 and 1,281.64 is: 1,921.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.40 : 5,385.66 = 1,281.64 : x
  2. Step 2: Convert to fraction form
    3,591.40/5,385.66 = 1,281.64/x
  3. Step 3: Cross multiply
    3,591.40x = 5,385.66 × 1,281.64
  4. Step 4: Simplify right side
    3,591.40x = 6,902,477.28
  5. Step 5: Solve for x
    x = 6,902,477.28/3,591.40
  6. Step 6: Final answer
    x = 1,921.95

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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.