Home / 5,630.40-8,447.06-2,120.43

Finding the Fourth Proportional to 5,630.40, 8,447.06 and 2,120.43

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Solution

The fourth proportional to 5,630.40, 8,447.06 and 2,120.43 is: 3,181.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,630.40 : 8,447.06 = 2,120.43 : x
  2. Step 2: Convert to fraction form
    5,630.40/8,447.06 = 2,120.43/x
  3. Step 3: Cross multiply
    5,630.40x = 8,447.06 × 2,120.43
  4. Step 4: Simplify right side
    5,630.40x = 17,911,399.44
  5. Step 5: Solve for x
    x = 17,911,399.44/5,630.40
  6. Step 6: Final answer
    x = 3,181.20

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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.