Home / 3,828.84-5,282.88-2,430.78

Finding the Fourth Proportional to 3,828.84, 5,282.88 and 2,430.78

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Solution

The fourth proportional to 3,828.84, 5,282.88 and 2,430.78 is: 3,353.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.84 : 5,282.88 = 2,430.78 : x
  2. Step 2: Convert to fraction form
    3,828.84/5,282.88 = 2,430.78/x
  3. Step 3: Cross multiply
    3,828.84x = 5,282.88 × 2,430.78
  4. Step 4: Simplify right side
    3,828.84x = 12,841,519.05
  5. Step 5: Solve for x
    x = 12,841,519.05/3,828.84
  6. Step 6: Final answer
    x = 3,353.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.