Home / 1,911.47-2,864.12-1,179.50

Finding the Fourth Proportional to 1,911.47, 2,864.12 and 1,179.50

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Solution

The fourth proportional to 1,911.47, 2,864.12 and 1,179.50 is: 1,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.47 : 2,864.12 = 1,179.50 : x
  2. Step 2: Convert to fraction form
    1,911.47/2,864.12 = 1,179.50/x
  3. Step 3: Cross multiply
    1,911.47x = 2,864.12 × 1,179.50
  4. Step 4: Simplify right side
    1,911.47x = 3,378,209.32
  5. Step 5: Solve for x
    x = 3,378,209.32/1,911.47
  6. Step 6: Final answer
    x = 1,767.34

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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.