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Finding the Fourth Proportional to 3,720.32, 5,573.76 and 1,984.96

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Solution

The fourth proportional to 3,720.32, 5,573.76 and 1,984.96 is: 2,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.32 : 5,573.76 = 1,984.96 : x
  2. Step 2: Convert to fraction form
    3,720.32/5,573.76 = 1,984.96/x
  3. Step 3: Cross multiply
    3,720.32x = 5,573.76 × 1,984.96
  4. Step 4: Simplify right side
    3,720.32x = 11,063,690.65
  5. Step 5: Solve for x
    x = 11,063,690.65/3,720.32
  6. Step 6: Final answer
    x = 2,973.85

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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.