Home / 2,839.84-3,918.70-1,580.79

Finding the Fourth Proportional to 2,839.84, 3,918.70 and 1,580.79

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Solution

The fourth proportional to 2,839.84, 3,918.70 and 1,580.79 is: 2,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.84 : 3,918.70 = 1,580.79 : x
  2. Step 2: Convert to fraction form
    2,839.84/3,918.70 = 1,580.79/x
  3. Step 3: Cross multiply
    2,839.84x = 3,918.70 × 1,580.79
  4. Step 4: Simplify right side
    2,839.84x = 6,194,641.77
  5. Step 5: Solve for x
    x = 6,194,641.77/2,839.84
  6. Step 6: Final answer
    x = 2,181.33

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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.