Home / 5,415.42-8,122.23-1,519.02

Finding the Fourth Proportional to 5,415.42, 8,122.23 and 1,519.02

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Solution

The fourth proportional to 5,415.42, 8,122.23 and 1,519.02 is: 2,278.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.42 : 8,122.23 = 1,519.02 : x
  2. Step 2: Convert to fraction form
    5,415.42/8,122.23 = 1,519.02/x
  3. Step 3: Cross multiply
    5,415.42x = 8,122.23 × 1,519.02
  4. Step 4: Simplify right side
    5,415.42x = 12,337,829.81
  5. Step 5: Solve for x
    x = 12,337,829.81/5,415.42
  6. Step 6: Final answer
    x = 2,278.28

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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.