Home / 2,842.12-4,259.40-1,281.79

Finding the Fourth Proportional to 2,842.12, 4,259.40 and 1,281.79

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Solution

The fourth proportional to 2,842.12, 4,259.40 and 1,281.79 is: 1,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.12 : 4,259.40 = 1,281.79 : x
  2. Step 2: Convert to fraction form
    2,842.12/4,259.40 = 1,281.79/x
  3. Step 3: Cross multiply
    2,842.12x = 4,259.40 × 1,281.79
  4. Step 4: Simplify right side
    2,842.12x = 5,459,656.33
  5. Step 5: Solve for x
    x = 5,459,656.33/2,842.12
  6. Step 6: Final answer
    x = 1,920.98

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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.