Home / 1,687.23-2,530.98-1,665.90

Finding the Fourth Proportional to 1,687.23, 2,530.98 and 1,665.90

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Solution

The fourth proportional to 1,687.23, 2,530.98 and 1,665.90 is: 2,498.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.23 : 2,530.98 = 1,665.90 : x
  2. Step 2: Convert to fraction form
    1,687.23/2,530.98 = 1,665.90/x
  3. Step 3: Cross multiply
    1,687.23x = 2,530.98 × 1,665.90
  4. Step 4: Simplify right side
    1,687.23x = 4,216,359.58
  5. Step 5: Solve for x
    x = 4,216,359.58/1,687.23
  6. Step 6: Final answer
    x = 2,498.98

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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.