Home / 5,631.66-8,447.72-2,121.30

Finding the Fourth Proportional to 5,631.66, 8,447.72 and 2,121.30

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Solution

The fourth proportional to 5,631.66, 8,447.72 and 2,121.30 is: 3,182.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.66 : 8,447.72 = 2,121.30 : x
  2. Step 2: Convert to fraction form
    5,631.66/8,447.72 = 2,121.30/x
  3. Step 3: Cross multiply
    5,631.66x = 8,447.72 × 2,121.30
  4. Step 4: Simplify right side
    5,631.66x = 17,920,137.83
  5. Step 5: Solve for x
    x = 17,920,137.83/5,631.66
  6. Step 6: Final answer
    x = 3,182.03

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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.