Home / 7,929.64-11,877.18-3,817

Finding the Fourth Proportional to 7,929.64, 11,877.18 and 3,817

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Solution

The fourth proportional to 7,929.64, 11,877.18 and 3,817 is: 5,717.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.64 : 11,877.18 = 3,817 : x
  2. Step 2: Convert to fraction form
    7,929.64/11,877.18 = 3,817/x
  3. Step 3: Cross multiply
    7,929.64x = 11,877.18 × 3,817
  4. Step 4: Simplify right side
    7,929.64x = 45,335,196.06
  5. Step 5: Solve for x
    x = 45,335,196.06/7,929.64
  6. Step 6: Final answer
    x = 5,717.18

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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.