Home / 2,783.02-4,171.49-1,687.09

Finding the Fourth Proportional to 2,783.02, 4,171.49 and 1,687.09

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Solution

The fourth proportional to 2,783.02, 4,171.49 and 1,687.09 is: 2,528.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.02 : 4,171.49 = 1,687.09 : x
  2. Step 2: Convert to fraction form
    2,783.02/4,171.49 = 1,687.09/x
  3. Step 3: Cross multiply
    2,783.02x = 4,171.49 × 1,687.09
  4. Step 4: Simplify right side
    2,783.02x = 7,037,679.06
  5. Step 5: Solve for x
    x = 7,037,679.06/2,783.02
  6. Step 6: Final answer
    x = 2,528.79

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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.