Home / 2,977.40-4,107.52-1,797.80

Finding the Fourth Proportional to 2,977.40, 4,107.52 and 1,797.80

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Solution

The fourth proportional to 2,977.40, 4,107.52 and 1,797.80 is: 2,480.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.40 : 4,107.52 = 1,797.80 : x
  2. Step 2: Convert to fraction form
    2,977.40/4,107.52 = 1,797.80/x
  3. Step 3: Cross multiply
    2,977.40x = 4,107.52 × 1,797.80
  4. Step 4: Simplify right side
    2,977.40x = 7,384,499.46
  5. Step 5: Solve for x
    x = 7,384,499.46/2,977.40
  6. Step 6: Final answer
    x = 2,480.18

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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.