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Finding the Fourth Proportional to 3,693.60, 5,564.70 and 3,207.60

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Solution

The fourth proportional to 3,693.60, 5,564.70 and 3,207.60 is: 4,832.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693.60 : 5,564.70 = 3,207.60 : x
  2. Step 2: Convert to fraction form
    3,693.60/5,564.70 = 3,207.60/x
  3. Step 3: Cross multiply
    3,693.60x = 5,564.70 × 3,207.60
  4. Step 4: Simplify right side
    3,693.60x = 17,849,331.72
  5. Step 5: Solve for x
    x = 17,849,331.72/3,693.60
  6. Step 6: Final answer
    x = 4,832.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.