Home / 2,512.90-3,763.42-1,277.55

Finding the Fourth Proportional to 2,512.90, 3,763.42 and 1,277.55

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Solution

The fourth proportional to 2,512.90, 3,763.42 and 1,277.55 is: 1,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.90 : 3,763.42 = 1,277.55 : x
  2. Step 2: Convert to fraction form
    2,512.90/3,763.42 = 1,277.55/x
  3. Step 3: Cross multiply
    2,512.90x = 3,763.42 × 1,277.55
  4. Step 4: Simplify right side
    2,512.90x = 4,807,957.22
  5. Step 5: Solve for x
    x = 4,807,957.22/2,512.90
  6. Step 6: Final answer
    x = 1,913.31

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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.