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Finding the Fourth Proportional to 7,861.66, 10,844.28 and 5,208.10

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Solution

The fourth proportional to 7,861.66, 10,844.28 and 5,208.10 is: 7,183.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.66 : 10,844.28 = 5,208.10 : x
  2. Step 2: Convert to fraction form
    7,861.66/10,844.28 = 5,208.10/x
  3. Step 3: Cross multiply
    7,861.66x = 10,844.28 × 5,208.10
  4. Step 4: Simplify right side
    7,861.66x = 56,478,094.67
  5. Step 5: Solve for x
    x = 56,478,094.67/7,861.66
  6. Step 6: Final answer
    x = 7,183.99

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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.