Home / 3,484.73-4,809.85-2,157.68

Finding the Fourth Proportional to 3,484.73, 4,809.85 and 2,157.68

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Solution

The fourth proportional to 3,484.73, 4,809.85 and 2,157.68 is: 2,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,484.73 : 4,809.85 = 2,157.68 : x
  2. Step 2: Convert to fraction form
    3,484.73/4,809.85 = 2,157.68/x
  3. Step 3: Cross multiply
    3,484.73x = 4,809.85 × 2,157.68
  4. Step 4: Simplify right side
    3,484.73x = 10,378,105.74
  5. Step 5: Solve for x
    x = 10,378,105.74/3,484.73
  6. Step 6: Final answer
    x = 2,978.17

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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.