Home / 2,440.31-3,366.80-1,392.11

Finding the Fourth Proportional to 2,440.31, 3,366.80 and 1,392.11

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Solution

The fourth proportional to 2,440.31, 3,366.80 and 1,392.11 is: 1,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,440.31 : 3,366.80 = 1,392.11 : x
  2. Step 2: Convert to fraction form
    2,440.31/3,366.80 = 1,392.11/x
  3. Step 3: Cross multiply
    2,440.31x = 3,366.80 × 1,392.11
  4. Step 4: Simplify right side
    2,440.31x = 4,686,948.99
  5. Step 5: Solve for x
    x = 4,686,948.99/2,440.31
  6. Step 6: Final answer
    x = 1,920.64

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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.