Home / 1,789.93-2,470.31-1,126.81

Finding the Fourth Proportional to 1,789.93, 2,470.31 and 1,126.81

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Solution

The fourth proportional to 1,789.93, 2,470.31 and 1,126.81 is: 1,555.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.93 : 2,470.31 = 1,126.81 : x
  2. Step 2: Convert to fraction form
    1,789.93/2,470.31 = 1,126.81/x
  3. Step 3: Cross multiply
    1,789.93x = 2,470.31 × 1,126.81
  4. Step 4: Simplify right side
    1,789.93x = 2,783,566.65
  5. Step 5: Solve for x
    x = 2,783,566.65/1,789.93
  6. Step 6: Final answer
    x = 1,555.13

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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.