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Finding the Fourth Proportional to 2,597.70, 3,895.97 and 1,280.15

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Solution

The fourth proportional to 2,597.70, 3,895.97 and 1,280.15 is: 1,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,597.70 : 3,895.97 = 1,280.15 : x
  2. Step 2: Convert to fraction form
    2,597.70/3,895.97 = 1,280.15/x
  3. Step 3: Cross multiply
    2,597.70x = 3,895.97 × 1,280.15
  4. Step 4: Simplify right side
    2,597.70x = 4,987,400.11
  5. Step 5: Solve for x
    x = 4,987,400.11/2,597.70
  6. Step 6: Final answer
    x = 1,919.93

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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.