Home / 8,721.46-12,035.68-4,742.71

Finding the Fourth Proportional to 8,721.46, 12,035.68 and 4,742.71

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Solution

The fourth proportional to 8,721.46, 12,035.68 and 4,742.71 is: 6,544.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.46 : 12,035.68 = 4,742.71 : x
  2. Step 2: Convert to fraction form
    8,721.46/12,035.68 = 4,742.71/x
  3. Step 3: Cross multiply
    8,721.46x = 12,035.68 × 4,742.71
  4. Step 4: Simplify right side
    8,721.46x = 57,081,775.90
  5. Step 5: Solve for x
    x = 57,081,775.90/8,721.46
  6. Step 6: Final answer
    x = 6,544.98

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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.