Home / 5,415.80-8,122.73-3,851.10

Finding the Fourth Proportional to 5,415.80, 8,122.73 and 3,851.10

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Solution

The fourth proportional to 5,415.80, 8,122.73 and 3,851.10 is: 5,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.80 : 8,122.73 = 3,851.10 : x
  2. Step 2: Convert to fraction form
    5,415.80/8,122.73 = 3,851.10/x
  3. Step 3: Cross multiply
    5,415.80x = 8,122.73 × 3,851.10
  4. Step 4: Simplify right side
    5,415.80x = 31,281,426.25
  5. Step 5: Solve for x
    x = 31,281,426.25/5,415.80
  6. Step 6: Final answer
    x = 5,775.96

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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.