Home / 8,215.76-11,337.78-4,678.96

Finding the Fourth Proportional to 8,215.76, 11,337.78 and 4,678.96

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Solution

The fourth proportional to 8,215.76, 11,337.78 and 4,678.96 is: 6,456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.76 : 11,337.78 = 4,678.96 : x
  2. Step 2: Convert to fraction form
    8,215.76/11,337.78 = 4,678.96/x
  3. Step 3: Cross multiply
    8,215.76x = 11,337.78 × 4,678.96
  4. Step 4: Simplify right side
    8,215.76x = 53,049,019.11
  5. Step 5: Solve for x
    x = 53,049,019.11/8,215.76
  6. Step 6: Final answer
    x = 6,456.98

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1.5x scale

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.