Home / 2,611.54-3,605.61-1,911.70

Finding the Fourth Proportional to 2,611.54, 3,605.61 and 1,911.70

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Solution

The fourth proportional to 2,611.54, 3,605.61 and 1,911.70 is: 2,639.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.54 : 3,605.61 = 1,911.70 : x
  2. Step 2: Convert to fraction form
    2,611.54/3,605.61 = 1,911.70/x
  3. Step 3: Cross multiply
    2,611.54x = 3,605.61 × 1,911.70
  4. Step 4: Simplify right side
    2,611.54x = 6,892,844.64
  5. Step 5: Solve for x
    x = 6,892,844.64/2,611.54
  6. Step 6: Final answer
    x = 2,639.38

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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.