Home / 5,108.72-7,656.56-2,918.64

Finding the Fourth Proportional to 5,108.72, 7,656.56 and 2,918.64

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Solution

The fourth proportional to 5,108.72, 7,656.56 and 2,918.64 is: 4,374.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.72 : 7,656.56 = 2,918.64 : x
  2. Step 2: Convert to fraction form
    5,108.72/7,656.56 = 2,918.64/x
  3. Step 3: Cross multiply
    5,108.72x = 7,656.56 × 2,918.64
  4. Step 4: Simplify right side
    5,108.72x = 22,346,742.28
  5. Step 5: Solve for x
    x = 22,346,742.28/5,108.72
  6. Step 6: Final answer
    x = 4,374.24

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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.