Home / 1,687.23-2,328.27-1,057.74

Finding the Fourth Proportional to 1,687.23, 2,328.27 and 1,057.74

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Solution

The fourth proportional to 1,687.23, 2,328.27 and 1,057.74 is: 1,459.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.23 : 2,328.27 = 1,057.74 : x
  2. Step 2: Convert to fraction form
    1,687.23/2,328.27 = 1,057.74/x
  3. Step 3: Cross multiply
    1,687.23x = 2,328.27 × 1,057.74
  4. Step 4: Simplify right side
    1,687.23x = 2,462,695.58
  5. Step 5: Solve for x
    x = 2,462,695.58/1,687.23
  6. Step 6: Final answer
    x = 1,459.61

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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.