Home / 4,285.20-6,426.20-1,687.60

Finding the Fourth Proportional to 4,285.20, 6,426.20 and 1,687.60

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Solution

The fourth proportional to 4,285.20, 6,426.20 and 1,687.60 is: 2,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.20 : 6,426.20 = 1,687.60 : x
  2. Step 2: Convert to fraction form
    4,285.20/6,426.20 = 1,687.60/x
  3. Step 3: Cross multiply
    4,285.20x = 6,426.20 × 1,687.60
  4. Step 4: Simplify right side
    4,285.20x = 10,844,855.12
  5. Step 5: Solve for x
    x = 10,844,855.12/4,285.20
  6. Step 6: Final answer
    x = 2,530.77

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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.