Home / 1,787.57-2,681.30-1,206.39

Finding the Fourth Proportional to 1,787.57, 2,681.30 and 1,206.39

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Solution

The fourth proportional to 1,787.57, 2,681.30 and 1,206.39 is: 1,809.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.57 : 2,681.30 = 1,206.39 : x
  2. Step 2: Convert to fraction form
    1,787.57/2,681.30 = 1,206.39/x
  3. Step 3: Cross multiply
    1,787.57x = 2,681.30 × 1,206.39
  4. Step 4: Simplify right side
    1,787.57x = 3,234,706.58
  5. Step 5: Solve for x
    x = 3,234,706.58/1,787.57
  6. Step 6: Final answer
    x = 1,809.56

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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.