Home / 1,787.55-2,463.48-1,289.34

Finding the Fourth Proportional to 1,787.55, 2,463.48 and 1,289.34

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Solution

The fourth proportional to 1,787.55, 2,463.48 and 1,289.34 is: 1,776.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.55 : 2,463.48 = 1,289.34 : x
  2. Step 2: Convert to fraction form
    1,787.55/2,463.48 = 1,289.34/x
  3. Step 3: Cross multiply
    1,787.55x = 2,463.48 × 1,289.34
  4. Step 4: Simplify right side
    1,787.55x = 3,176,263.30
  5. Step 5: Solve for x
    x = 3,176,263.30/1,787.55
  6. Step 6: Final answer
    x = 1,776.88

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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.