Home / 1,651.06-2,278.45-905.01

Finding the Fourth Proportional to 1,651.06, 2,278.45 and 905.01

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Solution

The fourth proportional to 1,651.06, 2,278.45 and 905.01 is: 1,248.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.06 : 2,278.45 = 905.01 : x
  2. Step 2: Convert to fraction form
    1,651.06/2,278.45 = 905.01/x
  3. Step 3: Cross multiply
    1,651.06x = 2,278.45 × 905.01
  4. Step 4: Simplify right side
    1,651.06x = 2,062,020.03
  5. Step 5: Solve for x
    x = 2,062,020.03/1,651.06
  6. Step 6: Final answer
    x = 1,248.91

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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.