Home / 5,076.59-7,005.65-3,086.78

Finding the Fourth Proportional to 5,076.59, 7,005.65 and 3,086.78

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Solution

The fourth proportional to 5,076.59, 7,005.65 and 3,086.78 is: 4,259.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,076.59 : 7,005.65 = 3,086.78 : x
  2. Step 2: Convert to fraction form
    5,076.59/7,005.65 = 3,086.78/x
  3. Step 3: Cross multiply
    5,076.59x = 7,005.65 × 3,086.78
  4. Step 4: Simplify right side
    5,076.59x = 21,624,849.84
  5. Step 5: Solve for x
    x = 21,624,849.84/5,076.59
  6. Step 6: Final answer
    x = 4,259.72

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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.