Home / 1,384.97-1,911.56-943.92

Finding the Fourth Proportional to 1,384.97, 1,911.56 and 943.92

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Solution

The fourth proportional to 1,384.97, 1,911.56 and 943.92 is: 1,302.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.97 : 1,911.56 = 943.92 : x
  2. Step 2: Convert to fraction form
    1,384.97/1,911.56 = 943.92/x
  3. Step 3: Cross multiply
    1,384.97x = 1,911.56 × 943.92
  4. Step 4: Simplify right side
    1,384.97x = 1,804,355.00
  5. Step 5: Solve for x
    x = 1,804,355.00/1,384.97
  6. Step 6: Final answer
    x = 1,302.82

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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.