Home / 8,721.54-12,035.75-4,742.64

Finding the Fourth Proportional to 8,721.54, 12,035.75 and 4,742.64

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Solution

The fourth proportional to 8,721.54, 12,035.75 and 4,742.64 is: 6,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.54 : 12,035.75 = 4,742.64 : x
  2. Step 2: Convert to fraction form
    8,721.54/12,035.75 = 4,742.64/x
  3. Step 3: Cross multiply
    8,721.54x = 12,035.75 × 4,742.64
  4. Step 4: Simplify right side
    8,721.54x = 57,081,205.67
  5. Step 5: Solve for x
    x = 57,081,205.67/8,721.54
  6. Step 6: Final answer
    x = 6,544.85

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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.