Home / 3,929.84-5,416.68-2,670.32

Finding the Fourth Proportional to 3,929.84, 5,416.68 and 2,670.32

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Solution

The fourth proportional to 3,929.84, 5,416.68 and 2,670.32 is: 3,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.84 : 5,416.68 = 2,670.32 : x
  2. Step 2: Convert to fraction form
    3,929.84/5,416.68 = 2,670.32/x
  3. Step 3: Cross multiply
    3,929.84x = 5,416.68 × 2,670.32
  4. Step 4: Simplify right side
    3,929.84x = 14,464,268.94
  5. Step 5: Solve for x
    x = 14,464,268.94/3,929.84
  6. Step 6: Final answer
    x = 3,680.63

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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.