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Finding the Fourth Proportional to 1,277.57, 1,925.57 and 1,265.22

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Solution

The fourth proportional to 1,277.57, 1,925.57 and 1,265.22 is: 1,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.57 : 1,925.57 = 1,265.22 : x
  2. Step 2: Convert to fraction form
    1,277.57/1,925.57 = 1,265.22/x
  3. Step 3: Cross multiply
    1,277.57x = 1,925.57 × 1,265.22
  4. Step 4: Simplify right side
    1,277.57x = 2,436,272.84
  5. Step 5: Solve for x
    x = 2,436,272.84/1,277.57
  6. Step 6: Final answer
    x = 1,906.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.