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Finding the Fourth Proportional to 7,857.64, 10,844.58 and 5,071.24

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Solution

The fourth proportional to 7,857.64, 10,844.58 and 5,071.24 is: 6,998.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.64 : 10,844.58 = 5,071.24 : x
  2. Step 2: Convert to fraction form
    7,857.64/10,844.58 = 5,071.24/x
  3. Step 3: Cross multiply
    7,857.64x = 10,844.58 × 5,071.24
  4. Step 4: Simplify right side
    7,857.64x = 54,995,467.88
  5. Step 5: Solve for x
    x = 54,995,467.88/7,857.64
  6. Step 6: Final answer
    x = 6,998.98

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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.