Home / 3,011.40-4,155.30-1,963.80

Finding the Fourth Proportional to 3,011.40, 4,155.30 and 1,963.80

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Solution

The fourth proportional to 3,011.40, 4,155.30 and 1,963.80 is: 2,709.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.40 : 4,155.30 = 1,963.80 : x
  2. Step 2: Convert to fraction form
    3,011.40/4,155.30 = 1,963.80/x
  3. Step 3: Cross multiply
    3,011.40x = 4,155.30 × 1,963.80
  4. Step 4: Simplify right side
    3,011.40x = 8,160,178.14
  5. Step 5: Solve for x
    x = 8,160,178.14/3,011.40
  6. Step 6: Final answer
    x = 2,709.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.