Home / 2,686.29-4,028.86-1,125.88

Finding the Fourth Proportional to 2,686.29, 4,028.86 and 1,125.88

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Solution

The fourth proportional to 2,686.29, 4,028.86 and 1,125.88 is: 1,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.29 : 4,028.86 = 1,125.88 : x
  2. Step 2: Convert to fraction form
    2,686.29/4,028.86 = 1,125.88/x
  3. Step 3: Cross multiply
    2,686.29x = 4,028.86 × 1,125.88
  4. Step 4: Simplify right side
    2,686.29x = 4,536,008.81
  5. Step 5: Solve for x
    x = 4,536,008.81/2,686.29
  6. Step 6: Final answer
    x = 1,688.58

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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.