Home / 7,109.85-10,649.39-5,157.75

Finding the Fourth Proportional to 7,109.85, 10,649.39 and 5,157.75

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Solution

The fourth proportional to 7,109.85, 10,649.39 and 5,157.75 is: 7,725.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.85 : 10,649.39 = 5,157.75 : x
  2. Step 2: Convert to fraction form
    7,109.85/10,649.39 = 5,157.75/x
  3. Step 3: Cross multiply
    7,109.85x = 10,649.39 × 5,157.75
  4. Step 4: Simplify right side
    7,109.85x = 54,926,865.48
  5. Step 5: Solve for x
    x = 54,926,865.48/7,109.85
  6. Step 6: Final answer
    x = 7,725.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.