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Finding the Fourth Proportional to 7,018, 10,521.48 and 3,899.08

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Solution

The fourth proportional to 7,018, 10,521.48 and 3,899.08 is: 5,845.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018 : 10,521.48 = 3,899.08 : x
  2. Step 2: Convert to fraction form
    7,018/10,521.48 = 3,899.08/x
  3. Step 3: Cross multiply
    7,018x = 10,521.48 × 3,899.08
  4. Step 4: Simplify right side
    7,018x = 41,024,092.24
  5. Step 5: Solve for x
    x = 41,024,092.24/7,018
  6. Step 6: Final answer
    x = 5,845.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.