Home / 2,853.90-4,281.15-905.65

Finding the Fourth Proportional to 2,853.90, 4,281.15 and 905.65

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Solution

The fourth proportional to 2,853.90, 4,281.15 and 905.65 is: 1,358.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.90 : 4,281.15 = 905.65 : x
  2. Step 2: Convert to fraction form
    2,853.90/4,281.15 = 905.65/x
  3. Step 3: Cross multiply
    2,853.90x = 4,281.15 × 905.65
  4. Step 4: Simplify right side
    2,853.90x = 3,877,216.19
  5. Step 5: Solve for x
    x = 3,877,216.19/2,853.90
  6. Step 6: Final answer
    x = 1,358.57

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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.