Home / 1,787.04-2,678.76-1,171.98

Finding the Fourth Proportional to 1,787.04, 2,678.76 and 1,171.98

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Solution

The fourth proportional to 1,787.04, 2,678.76 and 1,171.98 is: 1,756.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.04 : 2,678.76 = 1,171.98 : x
  2. Step 2: Convert to fraction form
    1,787.04/2,678.76 = 1,171.98/x
  3. Step 3: Cross multiply
    1,787.04x = 2,678.76 × 1,171.98
  4. Step 4: Simplify right side
    1,787.04x = 3,139,453.14
  5. Step 5: Solve for x
    x = 3,139,453.14/1,787.04
  6. Step 6: Final answer
    x = 1,756.79

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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.