Home / 1,780.58-2,667.33-1,628.30

Finding the Fourth Proportional to 1,780.58, 2,667.33 and 1,628.30

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Solution

The fourth proportional to 1,780.58, 2,667.33 and 1,628.30 is: 2,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.58 : 2,667.33 = 1,628.30 : x
  2. Step 2: Convert to fraction form
    1,780.58/2,667.33 = 1,628.30/x
  3. Step 3: Cross multiply
    1,780.58x = 2,667.33 × 1,628.30
  4. Step 4: Simplify right side
    1,780.58x = 4,343,220.11
  5. Step 5: Solve for x
    x = 4,343,220.11/1,780.58
  6. Step 6: Final answer
    x = 2,439.21

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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.