Home / 5,076.68-7,005.69-2,980.80

Finding the Fourth Proportional to 5,076.68, 7,005.69 and 2,980.80

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Solution

The fourth proportional to 5,076.68, 7,005.69 and 2,980.80 is: 4,113.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,076.68 : 7,005.69 = 2,980.80 : x
  2. Step 2: Convert to fraction form
    5,076.68/7,005.69 = 2,980.80/x
  3. Step 3: Cross multiply
    5,076.68x = 7,005.69 × 2,980.80
  4. Step 4: Simplify right side
    5,076.68x = 20,882,560.75
  5. Step 5: Solve for x
    x = 20,882,560.75/5,076.68
  6. Step 6: Final answer
    x = 4,113.43

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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.