Home / 5,611.36-8,418.64-2,280.64

Finding the Fourth Proportional to 5,611.36, 8,418.64 and 2,280.64

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Solution

The fourth proportional to 5,611.36, 8,418.64 and 2,280.64 is: 3,421.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.36 : 8,418.64 = 2,280.64 : x
  2. Step 2: Convert to fraction form
    5,611.36/8,418.64 = 2,280.64/x
  3. Step 3: Cross multiply
    5,611.36x = 8,418.64 × 2,280.64
  4. Step 4: Simplify right side
    5,611.36x = 19,199,887.13
  5. Step 5: Solve for x
    x = 19,199,887.13/5,611.36
  6. Step 6: Final answer
    x = 3,421.61

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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.