Home / 8,495.78-11,721.35-5,137.32

Finding the Fourth Proportional to 8,495.78, 11,721.35 and 5,137.32

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Solution

The fourth proportional to 8,495.78, 11,721.35 and 5,137.32 is: 7,087.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.78 : 11,721.35 = 5,137.32 : x
  2. Step 2: Convert to fraction form
    8,495.78/11,721.35 = 5,137.32/x
  3. Step 3: Cross multiply
    8,495.78x = 11,721.35 × 5,137.32
  4. Step 4: Simplify right side
    8,495.78x = 60,216,325.78
  5. Step 5: Solve for x
    x = 60,216,325.78/8,495.78
  6. Step 6: Final answer
    x = 7,087.79

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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.