Home / 1,787.14-2,685.75-1,057.06

Finding the Fourth Proportional to 1,787.14, 2,685.75 and 1,057.06

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Solution

The fourth proportional to 1,787.14, 2,685.75 and 1,057.06 is: 1,588.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.14 : 2,685.75 = 1,057.06 : x
  2. Step 2: Convert to fraction form
    1,787.14/2,685.75 = 1,057.06/x
  3. Step 3: Cross multiply
    1,787.14x = 2,685.75 × 1,057.06
  4. Step 4: Simplify right side
    1,787.14x = 2,838,998.90
  5. Step 5: Solve for x
    x = 2,838,998.90/1,787.14
  6. Step 6: Final answer
    x = 1,588.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.