Home / 1,434.09-2,149.34-775.95

Finding the Fourth Proportional to 1,434.09, 2,149.34 and 775.95

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Solution

The fourth proportional to 1,434.09, 2,149.34 and 775.95 is: 1,162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.09 : 2,149.34 = 775.95 : x
  2. Step 2: Convert to fraction form
    1,434.09/2,149.34 = 775.95/x
  3. Step 3: Cross multiply
    1,434.09x = 2,149.34 × 775.95
  4. Step 4: Simplify right side
    1,434.09x = 1,667,776.49
  5. Step 5: Solve for x
    x = 1,667,776.49/1,434.09
  6. Step 6: Final answer
    x = 1,162.95

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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.