Home / 1,787.96-2,467.92-1,089.68

Finding the Fourth Proportional to 1,787.96, 2,467.92 and 1,089.68

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Solution

The fourth proportional to 1,787.96, 2,467.92 and 1,089.68 is: 1,504.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.96 : 2,467.92 = 1,089.68 : x
  2. Step 2: Convert to fraction form
    1,787.96/2,467.92 = 1,089.68/x
  3. Step 3: Cross multiply
    1,787.96x = 2,467.92 × 1,089.68
  4. Step 4: Simplify right side
    1,787.96x = 2,689,243.07
  5. Step 5: Solve for x
    x = 2,689,243.07/1,787.96
  6. Step 6: Final answer
    x = 1,504.08

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1.5x scale

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.