Home / 5,643.12-8,464.68-2,720.88

Finding the Fourth Proportional to 5,643.12, 8,464.68 and 2,720.88

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Solution

The fourth proportional to 5,643.12, 8,464.68 and 2,720.88 is: 4,081.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.12 : 8,464.68 = 2,720.88 : x
  2. Step 2: Convert to fraction form
    5,643.12/8,464.68 = 2,720.88/x
  3. Step 3: Cross multiply
    5,643.12x = 8,464.68 × 2,720.88
  4. Step 4: Simplify right side
    5,643.12x = 23,031,378.52
  5. Step 5: Solve for x
    x = 23,031,378.52/5,643.12
  6. Step 6: Final answer
    x = 4,081.32

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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.