Home / 10,651.78-15,979.73-4,808.40

Finding the Fourth Proportional to 10,651.78, 15,979.73 and 4,808.40

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Solution

The fourth proportional to 10,651.78, 15,979.73 and 4,808.40 is: 7,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,651.78 : 15,979.73 = 4,808.40 : x
  2. Step 2: Convert to fraction form
    10,651.78/15,979.73 = 4,808.40/x
  3. Step 3: Cross multiply
    10,651.78x = 15,979.73 × 4,808.40
  4. Step 4: Simplify right side
    10,651.78x = 76,836,849.77
  5. Step 5: Solve for x
    x = 76,836,849.77/10,651.78
  6. Step 6: Final answer
    x = 7,213.52

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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.