Home / 1,479.62-2,038.39-1,226.59

Finding the Fourth Proportional to 1,479.62, 2,038.39 and 1,226.59

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Solution

The fourth proportional to 1,479.62, 2,038.39 and 1,226.59 is: 1,689.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.62 : 2,038.39 = 1,226.59 : x
  2. Step 2: Convert to fraction form
    1,479.62/2,038.39 = 1,226.59/x
  3. Step 3: Cross multiply
    1,479.62x = 2,038.39 × 1,226.59
  4. Step 4: Simplify right side
    1,479.62x = 2,500,275.54
  5. Step 5: Solve for x
    x = 2,500,275.54/1,479.62
  6. Step 6: Final answer
    x = 1,689.81

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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.