Home / 5,115.51-7,679.75-4,350.87

Finding the Fourth Proportional to 5,115.51, 7,679.75 and 4,350.87

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Solution

The fourth proportional to 5,115.51, 7,679.75 and 4,350.87 is: 6,531.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.51 : 7,679.75 = 4,350.87 : x
  2. Step 2: Convert to fraction form
    5,115.51/7,679.75 = 4,350.87/x
  3. Step 3: Cross multiply
    5,115.51x = 7,679.75 × 4,350.87
  4. Step 4: Simplify right side
    5,115.51x = 33,413,572.13
  5. Step 5: Solve for x
    x = 33,413,572.13/5,115.51
  6. Step 6: Final answer
    x = 6,531.82

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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.