Home / 1,309.07-1,963.64-1,047.86

Finding the Fourth Proportional to 1,309.07, 1,963.64 and 1,047.86

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Solution

The fourth proportional to 1,309.07, 1,963.64 and 1,047.86 is: 1,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.07 : 1,963.64 = 1,047.86 : x
  2. Step 2: Convert to fraction form
    1,309.07/1,963.64 = 1,047.86/x
  3. Step 3: Cross multiply
    1,309.07x = 1,963.64 × 1,047.86
  4. Step 4: Simplify right side
    1,309.07x = 2,057,621.44
  5. Step 5: Solve for x
    x = 2,057,621.44/1,309.07
  6. Step 6: Final answer
    x = 1,571.81

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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.