Home / 1,787.76-2,467.40-1,042.16

Finding the Fourth Proportional to 1,787.76, 2,467.40 and 1,042.16

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Solution

The fourth proportional to 1,787.76, 2,467.40 and 1,042.16 is: 1,438.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.76 : 2,467.40 = 1,042.16 : x
  2. Step 2: Convert to fraction form
    1,787.76/2,467.40 = 1,042.16/x
  3. Step 3: Cross multiply
    1,787.76x = 2,467.40 × 1,042.16
  4. Step 4: Simplify right side
    1,787.76x = 2,571,408.04
  5. Step 5: Solve for x
    x = 2,571,408.04/1,787.76
  6. Step 6: Final answer
    x = 1,438.34

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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.