Home / 2,667.80-4,005.30-1,698.20

Finding the Fourth Proportional to 2,667.80, 4,005.30 and 1,698.20

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Solution

The fourth proportional to 2,667.80, 4,005.30 and 1,698.20 is: 2,549.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.80 : 4,005.30 = 1,698.20 : x
  2. Step 2: Convert to fraction form
    2,667.80/4,005.30 = 1,698.20/x
  3. Step 3: Cross multiply
    2,667.80x = 4,005.30 × 1,698.20
  4. Step 4: Simplify right side
    2,667.80x = 6,801,800.46
  5. Step 5: Solve for x
    x = 6,801,800.46/2,667.80
  6. Step 6: Final answer
    x = 2,549.59

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1.5x scale

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.