Home / 7,135.68-10,702.56-2,208.72

Finding the Fourth Proportional to 7,135.68, 10,702.56 and 2,208.72

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Solution

The fourth proportional to 7,135.68, 10,702.56 and 2,208.72 is: 3,312.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.68 : 10,702.56 = 2,208.72 : x
  2. Step 2: Convert to fraction form
    7,135.68/10,702.56 = 2,208.72/x
  3. Step 3: Cross multiply
    7,135.68x = 10,702.56 × 2,208.72
  4. Step 4: Simplify right side
    7,135.68x = 23,638,958.32
  5. Step 5: Solve for x
    x = 23,638,958.32/7,135.68
  6. Step 6: Final answer
    x = 3,312.78

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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.