Home / 3,128.77-4,693.02-1,279.27

Finding the Fourth Proportional to 3,128.77, 4,693.02 and 1,279.27

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Solution

The fourth proportional to 3,128.77, 4,693.02 and 1,279.27 is: 1,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.77 : 4,693.02 = 1,279.27 : x
  2. Step 2: Convert to fraction form
    3,128.77/4,693.02 = 1,279.27/x
  3. Step 3: Cross multiply
    3,128.77x = 4,693.02 × 1,279.27
  4. Step 4: Simplify right side
    3,128.77x = 6,003,639.70
  5. Step 5: Solve for x
    x = 6,003,639.70/3,128.77
  6. Step 6: Final answer
    x = 1,918.85

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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.