Home / 7,929-11,887.62-4,809.72

Finding the Fourth Proportional to 7,929, 11,887.62 and 4,809.72

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Solution

The fourth proportional to 7,929, 11,887.62 and 4,809.72 is: 7,211.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929 : 11,887.62 = 4,809.72 : x
  2. Step 2: Convert to fraction form
    7,929/11,887.62 = 4,809.72/x
  3. Step 3: Cross multiply
    7,929x = 11,887.62 × 4,809.72
  4. Step 4: Simplify right side
    7,929x = 57,176,123.67
  5. Step 5: Solve for x
    x = 57,176,123.67/7,929
  6. Step 6: Final answer
    x = 7,211.01

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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.