Home / 5,118-7,678.26-1,655.25

Finding the Fourth Proportional to 5,118, 7,678.26 and 1,655.25

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Solution

The fourth proportional to 5,118, 7,678.26 and 1,655.25 is: 2,483.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118 : 7,678.26 = 1,655.25 : x
  2. Step 2: Convert to fraction form
    5,118/7,678.26 = 1,655.25/x
  3. Step 3: Cross multiply
    5,118x = 7,678.26 × 1,655.25
  4. Step 4: Simplify right side
    5,118x = 12,709,439.87
  5. Step 5: Solve for x
    x = 12,709,439.87/5,118
  6. Step 6: Final answer
    x = 2,483.28

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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.