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Finding the Fourth Proportional to 5,365.64, 7,405.62 and 3,499.40

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Solution

The fourth proportional to 5,365.64, 7,405.62 and 3,499.40 is: 4,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,365.64 : 7,405.62 = 3,499.40 : x
  2. Step 2: Convert to fraction form
    5,365.64/7,405.62 = 3,499.40/x
  3. Step 3: Cross multiply
    5,365.64x = 7,405.62 × 3,499.40
  4. Step 4: Simplify right side
    5,365.64x = 25,915,226.63
  5. Step 5: Solve for x
    x = 25,915,226.63/5,365.64
  6. Step 6: Final answer
    x = 4,829.85

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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.