Home / 1,458.06-2,011.77-868.83

Finding the Fourth Proportional to 1,458.06, 2,011.77 and 868.83

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Solution

The fourth proportional to 1,458.06, 2,011.77 and 868.83 is: 1,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.06 : 2,011.77 = 868.83 : x
  2. Step 2: Convert to fraction form
    1,458.06/2,011.77 = 868.83/x
  3. Step 3: Cross multiply
    1,458.06x = 2,011.77 × 868.83
  4. Step 4: Simplify right side
    1,458.06x = 1,747,886.13
  5. Step 5: Solve for x
    x = 1,747,886.13/1,458.06
  6. Step 6: Final answer
    x = 1,198.78

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1.5x scale

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.