Home / 9,135.88-12,607.32-5,157

Finding the Fourth Proportional to 9,135.88, 12,607.32 and 5,157

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Solution

The fourth proportional to 9,135.88, 12,607.32 and 5,157 is: 7,116.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.88 : 12,607.32 = 5,157 : x
  2. Step 2: Convert to fraction form
    9,135.88/12,607.32 = 5,157/x
  3. Step 3: Cross multiply
    9,135.88x = 12,607.32 × 5,157
  4. Step 4: Simplify right side
    9,135.88x = 65,015,949.24
  5. Step 5: Solve for x
    x = 65,015,949.24/9,135.88
  6. Step 6: Final answer
    x = 7,116.55

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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.