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Finding the Fourth Proportional to 5,370.87, 7,425.12 and 5,321.64

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Solution

The fourth proportional to 5,370.87, 7,425.12 and 5,321.64 is: 7,357.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,370.87 : 7,425.12 = 5,321.64 : x
  2. Step 2: Convert to fraction form
    5,370.87/7,425.12 = 5,321.64/x
  3. Step 3: Cross multiply
    5,370.87x = 7,425.12 × 5,321.64
  4. Step 4: Simplify right side
    5,370.87x = 39,513,815.60
  5. Step 5: Solve for x
    x = 39,513,815.60/5,370.87
  6. Step 6: Final answer
    x = 7,357.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.