Home / 2,289.45-3,159.59-1,294.77

Finding the Fourth Proportional to 2,289.45, 3,159.59 and 1,294.77

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Solution

The fourth proportional to 2,289.45, 3,159.59 and 1,294.77 is: 1,786.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.45 : 3,159.59 = 1,294.77 : x
  2. Step 2: Convert to fraction form
    2,289.45/3,159.59 = 1,294.77/x
  3. Step 3: Cross multiply
    2,289.45x = 3,159.59 × 1,294.77
  4. Step 4: Simplify right side
    2,289.45x = 4,090,935.87
  5. Step 5: Solve for x
    x = 4,090,935.87/2,289.45
  6. Step 6: Final answer
    x = 1,786.86

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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.