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Finding the Fourth Proportional to 3,967.89, 5,482.28 and 3,134.99

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Solution

The fourth proportional to 3,967.89, 5,482.28 and 3,134.99 is: 4,331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.89 : 5,482.28 = 3,134.99 : x
  2. Step 2: Convert to fraction form
    3,967.89/5,482.28 = 3,134.99/x
  3. Step 3: Cross multiply
    3,967.89x = 5,482.28 × 3,134.99
  4. Step 4: Simplify right side
    3,967.89x = 17,186,873.40
  5. Step 5: Solve for x
    x = 17,186,873.40/3,967.89
  6. Step 6: Final answer
    x = 4,331.49

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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.