Home / 2,690.26-4,036.04-1,129.40

Finding the Fourth Proportional to 2,690.26, 4,036.04 and 1,129.40

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Solution

The fourth proportional to 2,690.26, 4,036.04 and 1,129.40 is: 1,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.26 : 4,036.04 = 1,129.40 : x
  2. Step 2: Convert to fraction form
    2,690.26/4,036.04 = 1,129.40/x
  3. Step 3: Cross multiply
    2,690.26x = 4,036.04 × 1,129.40
  4. Step 4: Simplify right side
    2,690.26x = 4,558,303.58
  5. Step 5: Solve for x
    x = 4,558,303.58/2,690.26
  6. Step 6: Final answer
    x = 1,694.37

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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.