Home / 3,120.77-4,658.30-2,751.72

Finding the Fourth Proportional to 3,120.77, 4,658.30 and 2,751.72

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Solution

The fourth proportional to 3,120.77, 4,658.30 and 2,751.72 is: 4,107.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.77 : 4,658.30 = 2,751.72 : x
  2. Step 2: Convert to fraction form
    3,120.77/4,658.30 = 2,751.72/x
  3. Step 3: Cross multiply
    3,120.77x = 4,658.30 × 2,751.72
  4. Step 4: Simplify right side
    3,120.77x = 12,818,323.52
  5. Step 5: Solve for x
    x = 12,818,323.52/3,120.77
  6. Step 6: Final answer
    x = 4,107.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.