Home / 5,147.07-7,102.89-2,908.80

Finding the Fourth Proportional to 5,147.07, 7,102.89 and 2,908.80

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Solution

The fourth proportional to 5,147.07, 7,102.89 and 2,908.80 is: 4,014.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.07 : 7,102.89 = 2,908.80 : x
  2. Step 2: Convert to fraction form
    5,147.07/7,102.89 = 2,908.80/x
  3. Step 3: Cross multiply
    5,147.07x = 7,102.89 × 2,908.80
  4. Step 4: Simplify right side
    5,147.07x = 20,660,886.43
  5. Step 5: Solve for x
    x = 20,660,886.43/5,147.07
  6. Step 6: Final answer
    x = 4,014.11

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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.