Home / 1,927.79-2,660.34-1,043.61

Finding the Fourth Proportional to 1,927.79, 2,660.34 and 1,043.61

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Solution

The fourth proportional to 1,927.79, 2,660.34 and 1,043.61 is: 1,440.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.79 : 2,660.34 = 1,043.61 : x
  2. Step 2: Convert to fraction form
    1,927.79/2,660.34 = 1,043.61/x
  3. Step 3: Cross multiply
    1,927.79x = 2,660.34 × 1,043.61
  4. Step 4: Simplify right side
    1,927.79x = 2,776,351.36
  5. Step 5: Solve for x
    x = 2,776,351.36/1,927.79
  6. Step 6: Final answer
    x = 1,440.17

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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.