Home / 2,289.70-3,159.69-1,294.90

Finding the Fourth Proportional to 2,289.70, 3,159.69 and 1,294.90

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Solution

The fourth proportional to 2,289.70, 3,159.69 and 1,294.90 is: 1,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.70 : 3,159.69 = 1,294.90 : x
  2. Step 2: Convert to fraction form
    2,289.70/3,159.69 = 1,294.90/x
  3. Step 3: Cross multiply
    2,289.70x = 3,159.69 × 1,294.90
  4. Step 4: Simplify right side
    2,289.70x = 4,091,482.58
  5. Step 5: Solve for x
    x = 4,091,482.58/2,289.70
  6. Step 6: Final answer
    x = 1,786.91

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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.