Home / 5,415.95-8,121.88-2,127.25

Finding the Fourth Proportional to 5,415.95, 8,121.88 and 2,127.25

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Solution

The fourth proportional to 5,415.95, 8,121.88 and 2,127.25 is: 3,190.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.95 : 8,121.88 = 2,127.25 : x
  2. Step 2: Convert to fraction form
    5,415.95/8,121.88 = 2,127.25/x
  3. Step 3: Cross multiply
    5,415.95x = 8,121.88 × 2,127.25
  4. Step 4: Simplify right side
    5,415.95x = 17,277,269.23
  5. Step 5: Solve for x
    x = 17,277,269.23/5,415.95
  6. Step 6: Final answer
    x = 3,190.07

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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.