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Finding the Fourth Proportional to 3,573.80, 5,358.90 and 2,113.40

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Solution

The fourth proportional to 3,573.80, 5,358.90 and 2,113.40 is: 3,169.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,573.80 : 5,358.90 = 2,113.40 : x
  2. Step 2: Convert to fraction form
    3,573.80/5,358.90 = 2,113.40/x
  3. Step 3: Cross multiply
    3,573.80x = 5,358.90 × 2,113.40
  4. Step 4: Simplify right side
    3,573.80x = 11,325,499.26
  5. Step 5: Solve for x
    x = 11,325,499.26/3,573.80
  6. Step 6: Final answer
    x = 3,169.04

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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.