Home / 10,575.16-15,864.36-3,178.78

Finding the Fourth Proportional to 10,575.16, 15,864.36 and 3,178.78

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Solution

The fourth proportional to 10,575.16, 15,864.36 and 3,178.78 is: 4,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,575.16 : 15,864.36 = 3,178.78 : x
  2. Step 2: Convert to fraction form
    10,575.16/15,864.36 = 3,178.78/x
  3. Step 3: Cross multiply
    10,575.16x = 15,864.36 × 3,178.78
  4. Step 4: Simplify right side
    10,575.16x = 50,429,310.28
  5. Step 5: Solve for x
    x = 50,429,310.28/10,575.16
  6. Step 6: Final answer
    x = 4,768.66

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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.