Home / 3,426.80-5,140.20-1,698.80

Finding the Fourth Proportional to 3,426.80, 5,140.20 and 1,698.80

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Solution

The fourth proportional to 3,426.80, 5,140.20 and 1,698.80 is: 2,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.80 : 5,140.20 = 1,698.80 : x
  2. Step 2: Convert to fraction form
    3,426.80/5,140.20 = 1,698.80/x
  3. Step 3: Cross multiply
    3,426.80x = 5,140.20 × 1,698.80
  4. Step 4: Simplify right side
    3,426.80x = 8,732,171.76
  5. Step 5: Solve for x
    x = 8,732,171.76/3,426.80
  6. Step 6: Final answer
    x = 2,548.20

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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.