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Finding the Fourth Proportional to 5,555.64, 7,662.51 and 3,876.51

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Solution

The fourth proportional to 5,555.64, 7,662.51 and 3,876.51 is: 5,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.64 : 7,662.51 = 3,876.51 : x
  2. Step 2: Convert to fraction form
    5,555.64/7,662.51 = 3,876.51/x
  3. Step 3: Cross multiply
    5,555.64x = 7,662.51 × 3,876.51
  4. Step 4: Simplify right side
    5,555.64x = 29,703,796.64
  5. Step 5: Solve for x
    x = 29,703,796.64/5,555.64
  6. Step 6: Final answer
    x = 5,346.60

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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.