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Finding the Fourth Proportional to 5,247, 7,240.86 and 2,889.14

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Solution

The fourth proportional to 5,247, 7,240.86 and 2,889.14 is: 3,987.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247 : 7,240.86 = 2,889.14 : x
  2. Step 2: Convert to fraction form
    5,247/7,240.86 = 2,889.14/x
  3. Step 3: Cross multiply
    5,247x = 7,240.86 × 2,889.14
  4. Step 4: Simplify right side
    5,247x = 20,919,822.06
  5. Step 5: Solve for x
    x = 20,919,822.06/5,247
  6. Step 6: Final answer
    x = 3,987.01

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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.