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Finding the Fourth Proportional to 8,210.78, 11,330.90 and 4,484.78

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Solution

The fourth proportional to 8,210.78, 11,330.90 and 4,484.78 is: 6,189.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.78 : 11,330.90 = 4,484.78 : x
  2. Step 2: Convert to fraction form
    8,210.78/11,330.90 = 4,484.78/x
  3. Step 3: Cross multiply
    8,210.78x = 11,330.90 × 4,484.78
  4. Step 4: Simplify right side
    8,210.78x = 50,816,599.61
  5. Step 5: Solve for x
    x = 50,816,599.61/8,210.78
  6. Step 6: Final answer
    x = 6,189.01

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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.