Home / 3,385.20-5,077.80-2,866.80

Finding the Fourth Proportional to 3,385.20, 5,077.80 and 2,866.80

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Solution

The fourth proportional to 3,385.20, 5,077.80 and 2,866.80 is: 4,300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.20 : 5,077.80 = 2,866.80 : x
  2. Step 2: Convert to fraction form
    3,385.20/5,077.80 = 2,866.80/x
  3. Step 3: Cross multiply
    3,385.20x = 5,077.80 × 2,866.80
  4. Step 4: Simplify right side
    3,385.20x = 14,557,037.04
  5. Step 5: Solve for x
    x = 14,557,037.04/3,385.20
  6. Step 6: Final answer
    x = 4,300.20

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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.