Home / 5,085.62-7,018.11-2,847.47

Finding the Fourth Proportional to 5,085.62, 7,018.11 and 2,847.47

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Solution

The fourth proportional to 5,085.62, 7,018.11 and 2,847.47 is: 3,929.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.62 : 7,018.11 = 2,847.47 : x
  2. Step 2: Convert to fraction form
    5,085.62/7,018.11 = 2,847.47/x
  3. Step 3: Cross multiply
    5,085.62x = 7,018.11 × 2,847.47
  4. Step 4: Simplify right side
    5,085.62x = 19,983,857.68
  5. Step 5: Solve for x
    x = 19,983,857.68/5,085.62
  6. Step 6: Final answer
    x = 3,929.48

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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.