Home / 5,643.72-8,465.60-2,181.80

Finding the Fourth Proportional to 5,643.72, 8,465.60 and 2,181.80

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Solution

The fourth proportional to 5,643.72, 8,465.60 and 2,181.80 is: 3,272.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.72 : 8,465.60 = 2,181.80 : x
  2. Step 2: Convert to fraction form
    5,643.72/8,465.60 = 2,181.80/x
  3. Step 3: Cross multiply
    5,643.72x = 8,465.60 × 2,181.80
  4. Step 4: Simplify right side
    5,643.72x = 18,470,246.08
  5. Step 5: Solve for x
    x = 18,470,246.08/5,643.72
  6. Step 6: Final answer
    x = 3,272.71

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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.