Home / 5,631.20-8,445.21-2,120.93

Finding the Fourth Proportional to 5,631.20, 8,445.21 and 2,120.93

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Solution

The fourth proportional to 5,631.20, 8,445.21 and 2,120.93 is: 3,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.20 : 8,445.21 = 2,120.93 : x
  2. Step 2: Convert to fraction form
    5,631.20/8,445.21 = 2,120.93/x
  3. Step 3: Cross multiply
    5,631.20x = 8,445.21 × 2,120.93
  4. Step 4: Simplify right side
    5,631.20x = 17,911,657.02
  5. Step 5: Solve for x
    x = 17,911,657.02/5,631.20
  6. Step 6: Final answer
    x = 3,180.79

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Similar ratio
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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.