Home / 3,126.27-4,689.27-1,276.77

Finding the Fourth Proportional to 3,126.27, 4,689.27 and 1,276.77

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Solution

The fourth proportional to 3,126.27, 4,689.27 and 1,276.77 is: 1,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.27 : 4,689.27 = 1,276.77 : x
  2. Step 2: Convert to fraction form
    3,126.27/4,689.27 = 1,276.77/x
  3. Step 3: Cross multiply
    3,126.27x = 4,689.27 × 1,276.77
  4. Step 4: Simplify right side
    3,126.27x = 5,987,119.26
  5. Step 5: Solve for x
    x = 5,987,119.26/3,126.27
  6. Step 6: Final answer
    x = 1,915.10

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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.