Home / 1,780.30-2,664.15-1,551.70

Finding the Fourth Proportional to 1,780.30, 2,664.15 and 1,551.70

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Solution

The fourth proportional to 1,780.30, 2,664.15 and 1,551.70 is: 2,322.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.30 : 2,664.15 = 1,551.70 : x
  2. Step 2: Convert to fraction form
    1,780.30/2,664.15 = 1,551.70/x
  3. Step 3: Cross multiply
    1,780.30x = 2,664.15 × 1,551.70
  4. Step 4: Simplify right side
    1,780.30x = 4,133,961.56
  5. Step 5: Solve for x
    x = 4,133,961.56/1,780.30
  6. Step 6: Final answer
    x = 2,322.06

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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.