Home / 5,415.51-8,119.76-3,561.01

Finding the Fourth Proportional to 5,415.51, 8,119.76 and 3,561.01

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Solution

The fourth proportional to 5,415.51, 8,119.76 and 3,561.01 is: 5,339.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.51 : 8,119.76 = 3,561.01 : x
  2. Step 2: Convert to fraction form
    5,415.51/8,119.76 = 3,561.01/x
  3. Step 3: Cross multiply
    5,415.51x = 8,119.76 × 3,561.01
  4. Step 4: Simplify right side
    5,415.51x = 28,914,535.16
  5. Step 5: Solve for x
    x = 28,914,535.16/5,415.51
  6. Step 6: Final answer
    x = 5,339.21

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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.