Home / 2,686.48-4,026.88-1,126.08

Finding the Fourth Proportional to 2,686.48, 4,026.88 and 1,126.08

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Solution

The fourth proportional to 2,686.48, 4,026.88 and 1,126.08 is: 1,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.48 : 4,026.88 = 1,126.08 : x
  2. Step 2: Convert to fraction form
    2,686.48/4,026.88 = 1,126.08/x
  3. Step 3: Cross multiply
    2,686.48x = 4,026.88 × 1,126.08
  4. Step 4: Simplify right side
    2,686.48x = 4,534,589.03
  5. Step 5: Solve for x
    x = 4,534,589.03/2,686.48
  6. Step 6: Final answer
    x = 1,687.93

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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.