Home / 2,852.90-4,279.80-905.30

Finding the Fourth Proportional to 2,852.90, 4,279.80 and 905.30

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Solution

The fourth proportional to 2,852.90, 4,279.80 and 905.30 is: 1,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.90 : 4,279.80 = 905.30 : x
  2. Step 2: Convert to fraction form
    2,852.90/4,279.80 = 905.30/x
  3. Step 3: Cross multiply
    2,852.90x = 4,279.80 × 905.30
  4. Step 4: Simplify right side
    2,852.90x = 3,874,502.94
  5. Step 5: Solve for x
    x = 3,874,502.94/2,852.90
  6. Step 6: Final answer
    x = 1,358.09

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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.